chore(package): update babelify to version 7.3.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -17,7 +17,7 @@
  "devDependencies": {
  "babel": "5.8.29",
  "babel-eslint": "7.1.0",
- "babelify": "6.4.0",
+ "babelify": "7.3.0",
  "chokidar-cli": "1.1.0",
  "eslint": "3.9.1",
  "mocha": "3.0.2"