upgrade react native

Author: SimenB

examples/react-native/package.json

@@ -7,8 +7,8 @@
     "test": "jest"
   },
   "dependencies": {
-    "react": "16.6.3",
-    "react-native": "0.58.6"
+    "react": "16.8.6",
+    "react-native": "0.60.5"
   },
   "devDependencies": {
     "@babel/core": "*",