message: Started when created state navigator for clarity
diff: @@ -29,5 +29,8 @@ export default () => {
  tweet.renderScene = ({id}) => <Tweet tweet={getTweet(id)} />;
  timeline.renderScene = ({id}) => <Timeline timeline={getTimeline(id)} />;
  + if (Platform.OS !== 'web') stateNavigator.navigate('home');
  + else stateNavigator.start();
  +
  return stateNavigator;
  }
  