Upgrade react-native example to 0.47.1

Author: cesardeazevedo

example/package.json

@@ -8,10 +8,10 @@
     "test": "jest"
   },
   "dependencies": {
-    "react": "16.0.0-alpha.6",
-    "react-native": "0.44.2",
+    "react": "16.0.0-alpha.12",
+    "react-native": "0.47.1",
     "react-native-collapsing-toolbar": "file:../",
-    "react-native-vector-icons": "^4.0.0"
+    "react-native-vector-icons": "^4.3.0"
   },
   "devDependencies": {
     "babel-jest": "20.0.3",