Add .editorconfig for .js formatting

My vim and sublime would keep detecting tab indent for some reason

Author: zimbatm

.editorconfig

@@ -0,0 +1,14 @@
+# 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
+
+[*.js]
+charset = utf-8
+indent_style = space
+indent_size = 2