Add an .editorconfig file and clean up some whitespace.

.editorconfig

@@ -0,0 +1,18 @@
+# This file is for unifying the coding style for different editors and IDEs
+# editorconfig.org
+
+# WordPress Coding Standards
+# http://make.wordpress.org/core/handbook/coding-standards/
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = tab
+
+[{.jscsrc,.jshintrc,*.json,*.yml}]
+indent_style = space
+indent_size = 2

.jshintrc

@@ -1,19 +1,19 @@
 {
-	"boss": true,
-	"curly": true,
-	"devel": true,
-	"eqeqeq": true,
-	"eqnull": true,
-	"expr": true,
-	"immed": true,
-	"latedef": true,
-	"newcap": true,
-	"noarg": true,
-	"node": true,
-	"quotmark": "single",
-	"smarttabs": true,
-	"sub": true,
-	"trailing": true,
-	"undef": true,
-	"unused": "vars"
+  "boss": true,
+  "curly": true,
+  "devel": true,
+  "eqeqeq": true,
+  "eqnull": true,
+  "expr": true,
+  "immed": true,
+  "latedef": true,
+  "newcap": true,
+  "noarg": true,
+  "node": true,
+  "quotmark": "single",
+  "smarttabs": true,
+  "sub": true,
+  "trailing": true,
+  "undef": true,
+  "unused": "vars"
 }