message: Used functional component
diff: @@ -17,12 +17,8 @@ var {scene} = stateNavigator.states;
  scene.renderScene = () => <Page />;
  stateNavigator.navigate('scene');
  -export default class App extends Component {
  - render() {
  - return (
  +export default ({crumb}) => (
  <NavigationHandler stateNavigator={stateNavigator}>
  - <Scene crumb={this.props.crumb} />
  + <Scene crumb={crumb} />
  </NavigationHandler>
  );
  - }
  -}
  