Add addtional common problem for cache reset (#3809)

When fresh installing `v2` branch some time getting issues with bundling. Due to `rn-packager` cache. Normal `npm start -- --reset-cache` was not working properly. So had to reset the cache manually. Maybe its because of the start script is different from regular react native app setup

docs/docs/WorkingLocally.md

 	```
 		
 	You probably have an old node version which doesn't support async functions. Update your nodejs to 8+.
+* If the bundling fails with an error like `bundling failed: ambiguous resolution`, reset the `rn-packager` cache manually.
+	```
+	node ./node_modules/react-native/local-cli/cli.js start --reset-cache
+	```