message: Update vector icons to 4.0.0
  The new version of `react-native-vector-icons` uses `react-native@0.40.0`
  that has breaking change in headers.
diff: "packager",
  "rnpm"
  ],
  - "version": "0.5.20",
  + "version": "0.5.21",
  "private": false,
  "dependencies": {
  "blueimp-md5": "^2.5.0",
  "react-native-checkbox": "~1.0.8",
  "react-native-easy-grid": "0.1.7",
  "react-native-keyboard-aware-scroll-view": "0.2.0",
  - "react-native-vector-icons": "~3.0.0"
  + "react-native-vector-icons": "~4.0.0"
  },
  "devDependencies": {
  "babel-eslint": "^6.1.2",
  ],
  "optionalDependencies": {},
  "peerDependencies": {
  - "react-native": ">=0.38.0",
  + "react-native": ">=0.40.0",
  "react": ">=15.4.0"
  },
  "repository": {
  