text: import { AppRegistry } from 'react-native';
  import { StackNavigator } from 'react-navigation';
  import ChatScreen from './App';
  import BrowserPhotoScreen from './Image_browser';
  
  export default App = StackNavigator({
      Home: {
          screen: ChatScreen
      },
      BrowserPhoto: {
          screen: BrowserPhotoScreen
      }
  }, {
      headerMode: 'none'
  })
  
  AppRegistry.registerComponent('TestRNIMUI', () => App);
  