title: App stuck on launch screen and then shows error "No bundle url present"
body: <p>I have run the project which is created by following
  npm install
  react-native run-ios
  The terminal shows successfully launched app on the simulator.the app also shows the launch screen and it is stuck there for a minute or so and then it shows the error "No bundle url present"</p>
  
  <p>Expected result:
  show the first login page screen
  acutal result:
  app stuck on launch screen and then shows error on the simulator</p>