content: import React from 'react';
  import NavLink from './NavLink';
  
  export default React.createClass({
    render() {
      return (
          <div>
              <h1>React Router</ h1>
              <ul role="nav">
                  <li><NavLink to="/" onlyActiveOnIndex={ true }>Home</ NavLink></ li>
                  <li><NavLink to="/repos">Repos</ NavLink></ li>
                  <li><NavLink to="/about">About</ NavLink></ li>
              </ ul>
              {this.props.children}
          </ div>
      );
    }
  })
  