Clean up editor config

Author: Uku Pattak

.editorconfig

@@ -1,6 +1,3 @@
-# EditorConfig helps developers define and maintain
-# consistent coding styles between different editors and IDEs.
-
 root = true
 
 [*]
@@ -11,5 +8,6 @@ insert_final_newline = true
 indent_style = space
 indent_size = 4
 
-[*.md]
-trim_trailing_whitespace = false
+[{package.json,.travis.yml}]
+indent_style = space
+indent_size = 2