add some editorconfig stuff

.editorconfig

@@ -1,15 +1,22 @@
 # EditorConfig is awesome: http://EditorConfig.org
-#
 # All EditorConfig properties:
 # https://github.com/editorconfig/editorconfig/wiki/EditorConfig-Properties
 
-
 # Top-most EditorConfig file
 root = true
 
-# We use the same settings everywhere
 [*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
 charset = utf-8
+trim_trailing_whitespace = true
 insert_final_newline = true
+
+[{*.yml}]
+indent_style = space
+indent_size = 2
+
+[{*.json}]
 indent_style = space
-indent_size = 2
+indent_size = 2