.editorconfig added.

.editorconfig

@@ -0,0 +1,17 @@
+# This project uses EditorConfig (http://editorconfig.org) to standardize
+# tabulation, charset and other attributes of source files. Please head to
+# http://editorconfig.org/#download to check if your editor comes with
+# EditorConfig bundled or to download a plugin.
+
+root = true
+
+[*]
+charset = utf-8
+indent_style = tab
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[{package.json,*.yml}]
+indent_style = space
+indent_size = 2