title: How to initialise Redux store in react native with a StackNavigator?
body: <p>I am creating a react-native app with react-navigation.</p>
  
  <p>Now I ant to implement Redux in my app but I don't know how this works exactly. I created my stacknavigator like this: </p>
  
  <p><code>const MainNavigator = createStackNavigator({Start: {screen: Start}});</code></p>
  
  <p>Then I needed the documentation says asks to use <code>createAppContainer(MainNavigator)</code> and <code>AppRegistry.registerComponent()</code></p>
  
  <p>How to achieve this?</p>