content: import React from 'react';
  import { IndexLink, Link } from 'react-router';
  
  class App extends React.Component {
    render() {
      return (
        <div>
          <h1>TODO</h1>
          <ul>
            <li><IndexLink to="/" activeClassName="active">Home</IndexLink></li>
            <li><Link to="/about">About</Link></li>
          </ul>
          {this.props.children}
        </div>
      );
    }
  }
  
  export default App;
  
  App.propTypes = {
    children: React.PropTypes.node.isRequired
  };
  