Update example app to RN 0.53

example/package.json

   },
   "dependencies": {
     "react": "16.0.0",
-    "react-native": "0.51.0",
+    "react-native": "0.53.0",
     "react-native-animatable": "^1.1.0",
     "react-native-navigation": "latest"
   },