old_contents: import React, { Component } from 'react';
  import { Route } from 'react-router';
  import App from './App';
  import Home from './home';
  import Featured from './featured';
  import FeaturedArticle from './featured-article';
  
  let routes = (
    <Route name='app' path='/' handler={App} >
      <Route name='home' path='/' handler={Home} />
      <Route name='featured' path='/featured' handler={FeaturedArticle} />
    </Route>
  );
  
  export default routes;
new_contents: import React, { Component } from 'react';
  import { Route } from 'react-router';
  import App from './App';
  import Home from './home';
  import Featured from './featured';
  import FeaturedArticle from './featured-article';
  import PlaylistArticle from './playlist-article';
  
  let routes = (
    <Route name='app' path='/' handler={App} >
      <Route name='home' path='/' handler={Home} />
      <Route name='featured' path='/featured' handler={FeaturedArticle} />
      <Route name='playlist' path='/playlist' handler={PlaylistArticle} />
    </Route>
  );
  
  export default routes;
subject: add PlaylistArticle route