diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 105fccd..119917f 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,33 @@
 Changelog
 =========
 
+1.20.0 (2019-12-26)
+-------------------
+
+- Add --no-warnings option to suppress warning messages
+- Use 'syntax' as rule name upon syntax errors
+
+1.19.0 (2019-11-19)
+-------------------
+
+- Allow disabling all checks for a file with ``# yamllint disable-file``
+
+1.18.0 (2019-10-15)
+-------------------
+
+- Lint ``.yamllint`` config file by default
+- Also read config from ``.yamllint.yml`` and ``.yamllint.yaml``
+- Improve documentation for ``yaml-files``
+- Update documentation for ``pre-commit``
+- Explicitly disable ``empty-values`` and ``octal-values`` rules
+
+1.17.0 (2019-08-12)
+-------------------
+
+- Simplify installation instructions in the README
+- Add OpenBSD installation instructions
+- Make YAML file extensions configurable
+
 1.16.0 (2019-06-07)
 -------------------
 
diff --git a/README.rst b/README.rst
index 7f59956..0bebb78 100644
--- a/README.rst
+++ b/README.rst
@@ -38,38 +38,16 @@ Screenshot
 Installation
 ^^^^^^^^^^^^
 
-On Fedora / CentOS (note: `EPEL <https://fedoraproject.org/wiki/EPEL>`_ is
-required on CentOS):
-
-.. code:: bash
-
- sudo dnf install yamllint
-
-On Debian 8+ / Ubuntu 16.04+:
-
-.. code:: bash
-
- sudo apt-get install yamllint
-
-On FreeBSD:
-
-.. code:: sh
-
-  pkg install py27-yamllint
-  pkg install py36-yamllint
-
-On Mac OS 10.11+:
-
-.. code:: bash
-
- brew install yamllint
-
-Alternatively using pip, the Python package manager:
+Using pip, the Python package manager:
 
 .. code:: bash
 
  pip install --user yamllint
 
+yamllint is also packaged for all major operating systems, see installation
+examples (``dnf``, ``apt-get``...) `in the documentation
+<https://yamllint.readthedocs.io/en/stable/quickstart.html>`_.
+
 Usage
 ^^^^^
 
diff --git a/docs/configuration.rst b/docs/configuration.rst
index 817a16d..0322ad3 100644
--- a/docs/configuration.rst
+++ b/docs/configuration.rst
@@ -14,7 +14,8 @@ To use a custom configuration file, use the ``-c`` option:
 If ``-c`` is not provided, yamllint will look for a configuration file in the
 following locations (by order of preference):
 
-- ``.yamllint`` in the current working directory
+- ``.yamllint``, ``.yamllint.yaml`` or ``.yamllint.yml`` in the current working
+  directory
 - ``$XDG_CONFIG_HOME/yamllint/config``
 - ``~/.config/yamllint/config``
 
@@ -115,6 +116,25 @@ return code will be:
  * ``1`` if one or more errors occur
  * ``2`` if no errors occur, but one or more warnings occur
 
+If the script is invoked with the ``--no-warnings`` option, it won't output
+warning level problems, only error level ones.
+
+YAML files extensions
+---------------------
+
+To configure what yamllint should consider as YAML files, set ``yaml-files``
+configuration option. The default is:
+
+.. code-block:: yaml
+
+ yaml-files:
+   - '*.yaml'
+   - '*.yml'
+   - '.yamllint'
+
+The same rules as for ignoring paths apply (``.gitignore``-style path pattern,
+see below).
+
 Ignoring paths
 --------------
 
diff --git a/docs/disable_with_comments.rst b/docs/disable_with_comments.rst
index d50a372..40219f2 100644
--- a/docs/disable_with_comments.rst
+++ b/docs/disable_with_comments.rst
@@ -73,3 +73,31 @@ It is possible, although not recommend, to disabled **all** rules:
 
 If you need to disable multiple rules, it is allowed to chain rules like this:
 ``# yamllint disable rule:hyphens rule:commas rule:indentation``.
+
+Disabling all checks for a file
+-------------------------------
+
+To prevent yamllint from reporting problems for a specific file, add the
+directive comment ``# yamllint disable-file`` as the first line of the file.
+For instance:
+
+.. code-block:: yaml
+
+ # yamllint disable-file
+ # The following mapping contains the same key twice, but I know what I'm doing:
+ key: value 1
+ key: value 2
+
+ - This line is waaaaaaaaaay too long but yamllint will not report anything about it.
+   This line will be checked by yamllint.
+
+or:
+
+.. code-block:: jinja
+
+ # yamllint disable-file
+ # This file is not valid YAML because it is a Jinja template
+ {% if extra_info %}
+ key1: value1
+ {% endif %}
+ key2: value2
diff --git a/docs/integration.rst b/docs/integration.rst
index da67d7f..3457556 100644
--- a/docs/integration.rst
+++ b/docs/integration.rst
@@ -10,8 +10,10 @@ Here is an example, to add in your .pre-commit-config.yaml
 .. code:: yaml
 
   ---
-  # Update the sha variable with the release version that you want, from the yamllint repo
+  # Update the rev variable with the release version that you want, from the yamllint repo
+  # You can pass your custom .yamllint with args attribute.
   - repo: https://github.com/adrienverge/yamllint.git
-    sha: v1.8.1
+    rev: v1.17.0
     hooks:
       - id: yamllint
+        args: [-c=/path/to/.yamllint]
diff --git a/docs/quickstart.rst b/docs/quickstart.rst
index 427a9f3..9cf5f17 100644
--- a/docs/quickstart.rst
+++ b/docs/quickstart.rst
@@ -4,7 +4,8 @@ Quickstart
 Installing yamllint
 -------------------
 
-On Fedora / CentOS:
+On Fedora / CentOS (note: `EPEL <https://fedoraproject.org/wiki/EPEL>`_ is
+required on CentOS):
 
 .. code:: bash
 
@@ -22,6 +23,18 @@ On Mac OS 10.11+:
 
  brew install yamllint
 
+On FreeBSD:
+
+.. code:: sh
+
+  pkg install py36-yamllint
+
+On OpenBSD:
+
+.. code:: sh
+
+  doas pkg_add py3-yamllint
+
 Alternatively using pip, the Python package manager:
 
 .. code:: bash
diff --git a/tests/rules/test_octal_values.py b/tests/rules/test_octal_values.py
index 7e82d4e..f2d9a2b 100644
--- a/tests/rules/test_octal_values.py
+++ b/tests/rules/test_octal_values.py
@@ -28,7 +28,9 @@ class OctalValuesTestCase(RuleTestCase):
         self.check('user-city: 0o10', conf)
 
     def test_implicit_octal_values(self):
-        conf = ('octal-values: {forbid-implicit-octal: true}\n'
+        conf = ('octal-values:\n'
+                '  forbid-implicit-octal: true\n'
+                '  forbid-explicit-octal: false\n'
                 'new-line-at-end-of-file: disable\n'
                 'document-start: disable\n')
         self.check('user-city: 010', conf, problem=(1, 15))
@@ -50,7 +52,9 @@ class OctalValuesTestCase(RuleTestCase):
                    '  - 0e3\n', conf)
 
     def test_explicit_octal_values(self):
-        conf = ('octal-values: {forbid-explicit-octal: true}\n'
+        conf = ('octal-values:\n'
+                '  forbid-implicit-octal: false\n'
+                '  forbid-explicit-octal: true\n'
                 'new-line-at-end-of-file: disable\n'
                 'document-start: disable\n')
         self.check('user-city: 0o10', conf, problem=(1, 16))
diff --git a/tests/test_cli.py b/tests/test_cli.py
index b5ef82a..4244dc8 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -29,6 +29,7 @@ import unittest
 from tests.common import build_temp_workspace
 
 from yamllint import cli
+from yamllint import config
 
 
 class CommandLineTestCase(unittest.TestCase):
@@ -73,8 +74,9 @@ class CommandLineTestCase(unittest.TestCase):
         shutil.rmtree(cls.wd)
 
     def test_find_files_recursively(self):
+        conf = config.YamlLintConfig('extends: default')
         self.assertEqual(
-            sorted(cli.find_files_recursively([self.wd])),
+            sorted(cli.find_files_recursively([self.wd], conf)),
             [os.path.join(self.wd, 'a.yaml'),
              os.path.join(self.wd, 'empty.yml'),
              os.path.join(self.wd, 's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml'),
@@ -85,14 +87,14 @@ class CommandLineTestCase(unittest.TestCase):
         items = [os.path.join(self.wd, 'sub/ok.yaml'),
                  os.path.join(self.wd, 'empty-dir')]
         self.assertEqual(
-            sorted(cli.find_files_recursively(items)),
+            sorted(cli.find_files_recursively(items, conf)),
             [os.path.join(self.wd, 'sub/ok.yaml')],
         )
 
         items = [os.path.join(self.wd, 'empty.yml'),
                  os.path.join(self.wd, 's')]
         self.assertEqual(
-            sorted(cli.find_files_recursively(items)),
+            sorted(cli.find_files_recursively(items, conf)),
             [os.path.join(self.wd, 'empty.yml'),
              os.path.join(self.wd, 's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml')],
         )
@@ -100,11 +102,77 @@ class CommandLineTestCase(unittest.TestCase):
         items = [os.path.join(self.wd, 'sub'),
                  os.path.join(self.wd, '/etc/another/file')]
         self.assertEqual(
-            sorted(cli.find_files_recursively(items)),
+            sorted(cli.find_files_recursively(items, conf)),
             [os.path.join(self.wd, '/etc/another/file'),
              os.path.join(self.wd, 'sub/ok.yaml')],
         )
 
+        conf = config.YamlLintConfig('extends: default\n'
+                                     'yaml-files:\n'
+                                     '  - \'*.yaml\' \n')
+        self.assertEqual(
+            sorted(cli.find_files_recursively([self.wd], conf)),
+            [os.path.join(self.wd, 'a.yaml'),
+             os.path.join(self.wd, 's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml'),
+             os.path.join(self.wd, 'sub/ok.yaml'),
+             os.path.join(self.wd, 'warn.yaml')]
+        )
+
+        conf = config.YamlLintConfig('extends: default\n'
+                                     'yaml-files:\n'
+                                     '  - \'*.yml\'\n')
+        self.assertEqual(
+            sorted(cli.find_files_recursively([self.wd], conf)),
+            [os.path.join(self.wd, 'empty.yml')]
+        )
+
+        conf = config.YamlLintConfig('extends: default\n'
+                                     'yaml-files:\n'
+                                     '  - \'*.json\'\n')
+        self.assertEqual(
+            sorted(cli.find_files_recursively([self.wd], conf)),
+            [os.path.join(self.wd, 'no-yaml.json')]
+        )
+
+        conf = config.YamlLintConfig('extends: default\n'
+                                     'yaml-files:\n'
+                                     '  - \'*\'\n')
+        self.assertEqual(
+            sorted(cli.find_files_recursively([self.wd], conf)),
+            [os.path.join(self.wd, 'a.yaml'),
+             os.path.join(self.wd, 'empty.yml'),
+             os.path.join(self.wd, 'no-yaml.json'),
+             os.path.join(self.wd, 'non-ascii/utf-8'),
+             os.path.join(self.wd, 's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml'),
+             os.path.join(self.wd, 'sub/ok.yaml'),
+             os.path.join(self.wd, 'warn.yaml')]
+        )
+
+        conf = config.YamlLintConfig('extends: default\n'
+                                     'yaml-files:\n'
+                                     '  - \'*.yaml\'\n'
+                                     '  - \'*\'\n'
+                                     '  - \'**\'\n')
+        self.assertEqual(
+            sorted(cli.find_files_recursively([self.wd], conf)),
+            [os.path.join(self.wd, 'a.yaml'),
+             os.path.join(self.wd, 'empty.yml'),
+             os.path.join(self.wd, 'no-yaml.json'),
+             os.path.join(self.wd, 'non-ascii/utf-8'),
+             os.path.join(self.wd, 's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml'),
+             os.path.join(self.wd, 'sub/ok.yaml'),
+             os.path.join(self.wd, 'warn.yaml')]
+        )
+
+        conf = config.YamlLintConfig('extends: default\n'
+                                     'yaml-files:\n'
+                                     '  - \'s/**\'\n'
+                                     '  - \'**/utf-8\'\n')
+        self.assertEqual(
+            sorted(cli.find_files_recursively([self.wd], conf)),
+            [os.path.join(self.wd, 'non-ascii/utf-8')]
+        )
+
     def test_run_with_bad_arguments(self):
         sys.stdout, sys.stderr = StringIO(), StringIO()
         with self.assertRaises(SystemExit) as ctx:
@@ -462,5 +530,40 @@ class CommandLineTestCase(unittest.TestCase):
         out, err = sys.stdout.getvalue(), sys.stderr.getvalue()
         self.assertEqual(out, (
             'stdin:2:10: [error] syntax error: '
-            'mapping values are not allowed here\n'))
+            'mapping values are not allowed here (syntax)\n'))
         self.assertEqual(err, '')
+
+    def test_run_no_warnings(self):
+        file = os.path.join(self.wd, 'a.yaml')
+
+        sys.stdout, sys.stderr = StringIO(), StringIO()
+        with self.assertRaises(SystemExit) as ctx:
+            cli.run((file, '--no-warnings', '-f', 'auto'))
+
+        self.assertEqual(ctx.exception.code, 1)
+
+        out, err = sys.stdout.getvalue(), sys.stderr.getvalue()
+        self.assertEqual(out, (
+            '%s\n'
+            '  2:4       error    trailing spaces  (trailing-spaces)\n'
+            '  3:4       error    no new line character at the end of file  '
+            '(new-line-at-end-of-file)\n'
+            '\n' % file))
+        self.assertEqual(err, '')
+
+        file = os.path.join(self.wd, 'warn.yaml')
+
+        sys.stdout, sys.stderr = StringIO(), StringIO()
+        with self.assertRaises(SystemExit) as ctx:
+            cli.run((file, '--no-warnings', '-f', 'auto'))
+
+        self.assertEqual(ctx.exception.code, 0)
+
+    def test_run_no_warnings_and_strict(self):
+        file = os.path.join(self.wd, 'warn.yaml')
+
+        sys.stdout, sys.stderr = StringIO(), StringIO()
+        with self.assertRaises(SystemExit) as ctx:
+            cli.run((file, '--no-warnings', '-s'))
+
+        self.assertEqual(ctx.exception.code, 2)
diff --git a/tests/test_config.py b/tests/test_config.py
index d676382..b48546c 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -448,11 +448,13 @@ class IgnorePathConfigTestCase(unittest.TestCase):
         out = sys.stdout.getvalue()
         out = '\n'.join(sorted(out.splitlines()))
 
+        docstart = '[warning] missing document start "---" (document-start)'
         keydup = '[error] duplication of key "key" in mapping (key-duplicates)'
         trailing = '[error] trailing spaces (trailing-spaces)'
         hyphen = '[error] too many spaces after hyphen (hyphens)'
 
         self.assertEqual(out, '\n'.join((
+            './.yamllint:1:1: ' + docstart,
             './bin/file.lint-me-anyway.yaml:3:3: ' + keydup,
             './bin/file.lint-me-anyway.yaml:4:17: ' + trailing,
             './bin/file.lint-me-anyway.yaml:5:5: ' + hyphen,
diff --git a/tests/test_yamllint_directives.py b/tests/test_yamllint_directives.py
index 8c6e865..17bb69e 100644
--- a/tests/test_yamllint_directives.py
+++ b/tests/test_yamllint_directives.py
@@ -302,3 +302,104 @@ class YamllintDirectivesTestCase(RuleTestCase):
                    '    c: [x]\n',
                    conf,
                    problem=(6, 2, 'comments-indentation'))
+
+    def test_disable_file_directive(self):
+        conf = ('comments: {min-spaces-from-content: 2}\n'
+                'comments-indentation: {}\n')
+        self.check('# yamllint disable-file\n'
+                   '---\n'
+                   '- a: 1 # comment too close\n'
+                   '  b:\n'
+                   ' # wrong indentation\n'
+                   '    c: [x]\n',
+                   conf)
+        self.check('#    yamllint disable-file\n'
+                   '---\n'
+                   '- a: 1 # comment too close\n'
+                   '  b:\n'
+                   ' # wrong indentation\n'
+                   '    c: [x]\n',
+                   conf)
+        self.check('#yamllint disable-file\n'
+                   '---\n'
+                   '- a: 1 # comment too close\n'
+                   '  b:\n'
+                   ' # wrong indentation\n'
+                   '    c: [x]\n',
+                   conf)
+        self.check('#yamllint disable-file    \n'
+                   '---\n'
+                   '- a: 1 # comment too close\n'
+                   '  b:\n'
+                   ' # wrong indentation\n'
+                   '    c: [x]\n',
+                   conf)
+        self.check('---\n'
+                   '# yamllint disable-file\n'
+                   '- a: 1 # comment too close\n'
+                   '  b:\n'
+                   ' # wrong indentation\n'
+                   '    c: [x]\n',
+                   conf,
+                   problem1=(3, 8, 'comments'),
+                   problem2=(5, 2, 'comments-indentation'))
+        self.check('# yamllint disable-file: rules cannot be specified\n'
+                   '---\n'
+                   '- a: 1 # comment too close\n'
+                   '  b:\n'
+                   ' # wrong indentation\n'
+                   '    c: [x]\n',
+                   conf,
+                   problem1=(3, 8, 'comments'),
+                   problem2=(5, 2, 'comments-indentation'))
+        self.check('AAAA yamllint disable-file\n'
+                   '---\n'
+                   '- a: 1 # comment too close\n'
+                   '  b:\n'
+                   ' # wrong indentation\n'
+                   '    c: [x]\n',
+                   conf,
+                   problem1=(1, 1, 'document-start'),
+                   problem2=(3, 8, 'comments'),
+                   problem3=(5, 2, 'comments-indentation'))
+
+    def test_disable_file_directive_not_at_first_position(self):
+        self.check('# yamllint disable-file\n'
+                   '---\n'
+                   '- bad  : colon and spaces   \n',
+                   self.conf)
+        self.check('---\n'
+                   '# yamllint disable-file\n'
+                   '- bad  : colon and spaces   \n',
+                   self.conf,
+                   problem1=(3, 7, 'colons'),
+                   problem2=(3, 26, 'trailing-spaces'))
+
+    def test_disable_file_directive_with_syntax_error(self):
+        self.check('# This file is not valid YAML (it is a Jinja template)\n'
+                   '{% if extra_info %}\n'
+                   'key1: value1\n'
+                   '{% endif %}\n'
+                   'key2: value2\n',
+                   self.conf,
+                   problem=(2, 2, 'syntax'))
+        self.check('# yamllint disable-file\n'
+                   '# This file is not valid YAML (it is a Jinja template)\n'
+                   '{% if extra_info %}\n'
+                   'key1: value1\n'
+                   '{% endif %}\n'
+                   'key2: value2\n',
+                   self.conf)
+
+    def test_disable_file_directive_with_dos_lines(self):
+        self.check('# yamllint disable-file\r\n'
+                   '---\r\n'
+                   '- bad  : colon and spaces   \r\n',
+                   self.conf)
+        self.check('# yamllint disable-file\r\n'
+                   '# This file is not valid YAML (it is a Jinja template)\r\n'
+                   '{% if extra_info %}\r\n'
+                   'key1: value1\r\n'
+                   '{% endif %}\r\n'
+                   'key2: value2\r\n',
+                   self.conf)
diff --git a/yamllint/__init__.py b/yamllint/__init__.py
index 932054e..676c80f 100644
--- a/yamllint/__init__.py
+++ b/yamllint/__init__.py
@@ -22,7 +22,7 @@ indentation, etc."""
 
 
 APP_NAME = 'yamllint'
-APP_VERSION = '1.16.0'
+APP_VERSION = '1.20.0'
 APP_DESCRIPTION = __doc__
 
 __author__ = u'Adrien Vergé'
diff --git a/yamllint/cli.py b/yamllint/cli.py
index 9975b4e..26bdb1f 100644
--- a/yamllint/cli.py
+++ b/yamllint/cli.py
@@ -27,13 +27,14 @@ from yamllint.config import YamlLintConfig, YamlLintConfigError
 from yamllint.linter import PROBLEM_LEVELS
 
 
-def find_files_recursively(items):
+def find_files_recursively(items, conf):
     for item in items:
         if os.path.isdir(item):
             for root, dirnames, filenames in os.walk(item):
-                for filename in [f for f in filenames
-                                 if f.endswith(('.yml', '.yaml'))]:
-                    yield os.path.join(root, filename)
+                for f in filenames:
+                    filepath = os.path.join(root, f)
+                    if conf.is_yaml_file(filepath):
+                        yield filepath
         else:
             yield item
 
@@ -83,11 +84,14 @@ class Format(object):
         return line
 
 
-def show_problems(problems, file, args_format):
+def show_problems(problems, file, args_format, no_warn):
     max_level = 0
     first = True
 
     for problem in problems:
+        max_level = max(max_level, PROBLEM_LEVELS[problem.level])
+        if no_warn and (problem.level != 'error'):
+            continue
         if args_format == 'parsable':
             print(Format.parsable(problem, file))
         elif args_format == 'colored' or \
@@ -101,7 +105,6 @@ def show_problems(problems, file, args_format):
                 print(file)
                 first = False
             print(Format.standard(problem, file))
-        max_level = max(max_level, PROBLEM_LEVELS[problem.level])
 
     if not first and args_format != 'parsable':
         print('')
@@ -132,6 +135,9 @@ def run(argv=None):
                         action='store_true',
                         help='return non-zero exit code on warnings '
                              'as well as errors')
+    parser.add_argument('--no-warnings',
+                        action='store_true',
+                        help='output only error level problems')
     parser.add_argument('-v', '--version', action='version',
                         version='{} {}'.format(APP_NAME, APP_VERSION))
 
@@ -153,6 +159,10 @@ def run(argv=None):
             conf = YamlLintConfig(file=args.config_file)
         elif os.path.isfile('.yamllint'):
             conf = YamlLintConfig(file='.yamllint')
+        elif os.path.isfile('.yamllint.yaml'):
+            conf = YamlLintConfig(file='.yamllint.yaml')
+        elif os.path.isfile('.yamllint.yml'):
+            conf = YamlLintConfig(file='.yamllint.yml')
         elif os.path.isfile(user_global_config):
             conf = YamlLintConfig(file=user_global_config)
         else:
@@ -163,7 +173,7 @@ def run(argv=None):
 
     max_level = 0
 
-    for file in find_files_recursively(args.files):
+    for file in find_files_recursively(args.files, conf):
         filepath = file[2:] if file.startswith('./') else file
         try:
             with open(file) as f:
@@ -171,7 +181,8 @@ def run(argv=None):
         except EnvironmentError as e:
             print(e, file=sys.stderr)
             sys.exit(-1)
-        prob_level = show_problems(problems, file, args_format=args.format)
+        prob_level = show_problems(problems, file, args_format=args.format,
+                                   no_warn=args.no_warnings)
         max_level = max(max_level, prob_level)
 
     # read yaml from stdin
@@ -181,7 +192,8 @@ def run(argv=None):
         except EnvironmentError as e:
             print(e, file=sys.stderr)
             sys.exit(-1)
-        prob_level = show_problems(problems, 'stdin', args_format=args.format)
+        prob_level = show_problems(problems, 'stdin', args_format=args.format,
+                                   no_warn=args.no_warnings)
         max_level = max(max_level, prob_level)
 
     if max_level == PROBLEM_LEVELS['error']:
diff --git a/yamllint/conf/default.yaml b/yamllint/conf/default.yaml
index da9701e..0720ded 100644
--- a/yamllint/conf/default.yaml
+++ b/yamllint/conf/default.yaml
@@ -1,5 +1,10 @@
 ---
 
+yaml-files:
+  - '*.yaml'
+  - '*.yml'
+  - '.yamllint'
+
 rules:
   braces: enable
   brackets: enable
@@ -13,7 +18,7 @@ rules:
   document-start:
     level: warning
   empty-lines: enable
-  empty-values: enable
+  empty-values: disable
   hyphens: enable
   indentation: enable
   key-duplicates: enable
@@ -21,7 +26,7 @@ rules:
   line-length: enable
   new-line-at-end-of-file: enable
   new-lines: enable
-  octal-values: enable
+  octal-values: disable
   quoted-strings: disable
   trailing-spaces: enable
   truthy:
diff --git a/yamllint/config.py b/yamllint/config.py
index 2cafe8a..0837799 100644
--- a/yamllint/config.py
+++ b/yamllint/config.py
@@ -32,6 +32,9 @@ class YamlLintConfig(object):
 
         self.ignore = None
 
+        self.yaml_files = pathspec.PathSpec.from_lines(
+            'gitwildmatch', ['*.yaml', '*.yml', '.yamllint'])
+
         if file is not None:
             with open(file) as f:
                 content = f.read()
@@ -42,6 +45,9 @@ class YamlLintConfig(object):
     def is_file_ignored(self, filepath):
         return self.ignore and self.ignore.match_file(filepath)
 
+    def is_yaml_file(self, filepath):
+        return self.yaml_files.match_file(filepath)
+
     def enabled_rules(self, filepath):
         return [yamllint.rules.get(id) for id, val in self.rules.items()
                 if val is not False and (
@@ -96,6 +102,15 @@ class YamlLintConfig(object):
             self.ignore = pathspec.PathSpec.from_lines(
                 'gitwildmatch', conf['ignore'].splitlines())
 
+        if 'yaml-files' in conf:
+            if not (isinstance(conf['yaml-files'], list)
+                    and all(isinstance(i, str) for i in conf['yaml-files'])):
+                raise YamlLintConfigError(
+                    'invalid config: yaml-files '
+                    'should be a list of file patterns')
+            self.yaml_files = pathspec.PathSpec.from_lines('gitwildmatch',
+                                                           conf['yaml-files'])
+
     def validate(self):
         for id in self.rules:
             try:
diff --git a/yamllint/linter.py b/yamllint/linter.py
index ab46dca..c687f14 100644
--- a/yamllint/linter.py
+++ b/yamllint/linter.py
@@ -180,7 +180,7 @@ def get_syntax_error(buffer):
     except yaml.error.MarkedYAMLError as e:
         problem = LintProblem(e.problem_mark.line + 1,
                               e.problem_mark.column + 1,
-                              'syntax error: ' + e.problem)
+                              'syntax error: ' + e.problem + ' (syntax)')
         problem.level = 'error'
         return problem
 
@@ -189,6 +189,10 @@ def _run(buffer, conf, filepath):
     assert hasattr(buffer, '__getitem__'), \
         '_run() argument must be a buffer, not a stream'
 
+    first_line = next(parser.line_generator(buffer)).content
+    if re.match(r'^#\s*yamllint disable-file\s*$', first_line):
+        return
+
     # If the document contains a syntax error, save it and yield it at the
     # right line
     syntax_error = get_syntax_error(buffer)
diff --git a/yamllint/rules/empty_values.py b/yamllint/rules/empty_values.py
index 14bd0e0..bb4982b 100644
--- a/yamllint/rules/empty_values.py
+++ b/yamllint/rules/empty_values.py
@@ -75,8 +75,8 @@ ID = 'empty-values'
 TYPE = 'token'
 CONF = {'forbid-in-block-mappings': bool,
         'forbid-in-flow-mappings': bool}
-DEFAULT = {'forbid-in-block-mappings': False,
-           'forbid-in-flow-mappings': False}
+DEFAULT = {'forbid-in-block-mappings': True,
+           'forbid-in-flow-mappings': True}
 
 
 def check(conf, token, prev, next, nextnext, context):
diff --git a/yamllint/rules/octal_values.py b/yamllint/rules/octal_values.py
index 40de39a..f6e80ce 100644
--- a/yamllint/rules/octal_values.py
+++ b/yamllint/rules/octal_values.py
@@ -66,8 +66,8 @@ ID = 'octal-values'
 TYPE = 'token'
 CONF = {'forbid-implicit-octal': bool,
         'forbid-explicit-octal': bool}
-DEFAULT = {'forbid-implicit-octal': False,
-           'forbid-explicit-octal': False}
+DEFAULT = {'forbid-implicit-octal': True,
+           'forbid-explicit-octal': True}
 
 
 def check(conf, token, prev, next, nextnext, context):
diff --git a/yamllint/rules/truthy.py b/yamllint/rules/truthy.py
index 3cf058b..7dd778f 100644
--- a/yamllint/rules/truthy.py
+++ b/yamllint/rules/truthy.py
@@ -101,7 +101,7 @@ from yamllint.linter import LintProblem
 
 TRUTHY = ['YES', 'Yes', 'yes',
           'NO', 'No', 'no',
-          'TRUE', 'True',  'true',
+          'TRUE', 'True', 'true',
           'FALSE', 'False', 'false',
           'ON', 'On', 'on',
           'OFF', 'Off', 'off']