message: Removed App now defaults work
diff: }
  stateNavigator.start();
  - var App = ({crumb}) => (
  - <NavigationHandler stateNavigator={stateNavigator}>
  - <Scene crumb={crumb} />
  - </NavigationHandler>
  - );
  -
  ReactDOM.render(
  <NavigationHandler stateNavigator={stateNavigator}>
  <NavigationMotion
  - app={App}
  unmountedStyle={{opacity: 1, translate: 100}}
  mountedStyle={{opacity: 1, translate: 0}}
  crumbStyle={{opacity: 0, translate: 0}}>
  