Add .editorconfig file to Bedrock

.editorconfig

@@ -0,0 +1,33 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+
+[*.py]
+indent_size = 4
+
+[*.js]
+indent_size = 4
+
+[*.json]
+indent_size = 4
+
+[*.css]
+indent_size = 4
+
+[*.less]
+indent_size = 4
+
+[*.html]
+indent_size = 2
+
+# Matches the exact files package.json and .travis.yml
+[{package.json, .travis.yml}]
+indent_size = 2

docs/coding.rst

@@ -128,3 +128,11 @@ CSS Style
 
 See the `Mozilla CSS Style Guide
 <http://mozweb.readthedocs.org/en/latest/css-style.html>`_.
+
+Configuring your code editor
+----------------------------
+
+Bedrock includes an `.editorconfig` file in the root directory that you can
+use with your code editor to help maintain consistent coding styles. Please
+see `editorconfig.org<http://editorconfig.org/>`_. for a list of supported
+editors and available plugins.