content: import React from 'react';
  import Header from './Header';
  import Content from './Content';
  import Footer from './Footer';
  
  
  const App = React.createClass({
  
    render(){
      return (
        <div>
          <Header />
          <Content />
          <Footer />
        </div>
      );
    }
  });
  
  export default App;