Example is updated

Author: kuraydev

example/package.json

@@ -11,7 +11,8 @@
     "react": "16.8.6",
     "react-native": "0.60.4",
     "react-native-gesture-handler": "^1.3.0",
-    "react-navigation": "^3.11.1"
+    "react-navigation": "^3.11.1",
+    "react-navigation-helpers": "0.0.11"
   },
   "devDependencies": {
     "@babel/core": "^7.5.5",