Add /.editorconfig

.editorconfig

@@ -0,0 +1,13 @@
+# editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false

CHANGELOG.md

@@ -1,5 +1,7 @@
 ### HEAD
 
+* Add `/.editorconfig` file and documentation
+  ([#1561](https://github.com/h5bp/html5-boilerplate/issues/1561)).
 * Add `auto` to the Google Universal Analytics tracker create method
   ([#1562](https://github.com/h5bp/html5-boilerplate/issues/1562)).
 * Add `timeline` and `timelineEnd` to the list of `console` methods

doc/misc.md

@@ -4,6 +4,7 @@ table of contents](TOC.md)
 # Miscellaneous
 
 * [.gitignore](#gitignore)
+* [.editorconfig](#editorconfig)
 * [.htaccess](#htaccess)
 * [crossdomain.xml](#crossdomainxml)
 
@@ -32,6 +33,32 @@ globally ignore:
 * Comprehensive set of ignores on GitHub: https://github.com/github/gitignore
 
 
+## .editorconfig
+
+HTML5 Boilerplate includes an `.editorconfig` file that helps you and your team
+define and maintain consistent coding styles between different editors and IDEs.
+EditorConfig files are easily readable and they work nicely with version control
+systems.
+
+When opening any file, your IDE’s EditorConfig plugin will look for a file named
+`.editorconfig` in the directory of the opened file and in every parent
+directory until the root filepath is reached or an EditorConfig file with
+`root = true` is found.
+
+The EditorConfig file provided by this project will inform your IDE to follow
+our current practices, which include UTF-8 charset encoding, use of the line
+feed character for line breaks, use of four space characters for indentations,
+the removal of any whitespace characters preceding newline characters, and the
+presence of a final line break character at the end of files.
+
+If you will not be using a server configuration file provided by this project,
+remember to block access to `.editorconfig` files, as they may disclose
+sensitive information.
+
+* [EditorConfig homepage](http://editorconfig.org/)
+* [Download IDE Plugin](http://editorconfig.org/#download)
+
+
 ### `.htaccess`
 
 A `.htaccess` (hypertext access) file is a Apache HTTP server configuration