chore(package): update parse-diff to version 0.4.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -28,7 +28,7 @@
     "classnames": "^2.2.5",
     "lang-map": "^0.4.0",
     "lodash": "^4.16.2",
-    "parse-diff": "^0.3.2",
+    "parse-diff": "^0.4.0",
     "prismjs-package": "^0.7.18",
     "react": "^15.3.2",
     "react-dom": "^15.3.2"