minor #104 Add an EditorConfig file (Lyrkan)

This PR was merged into the master branch.

Discussion
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Add an EditorConfig file

This PR adds an [.editorconfig](http://editorconfig.org/) file at the root of the project with the following settings:

* Unix line endings
* For JS files:
  * 4-spaces indents
  * Trim trailing whitespaces
  * Insert a new line at the end of each file

Commits
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a26fa15 Add EditorConfig file

Author: weaverryan

.editorconfig

@@ -0,0 +1,12 @@
+; top-most EditorConfig file
+root = true
+
+; Unix-style newlines
+[*]
+end_of_line = LF
+
+[*.js]
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true