text: import React, {PropTypes} from 'react';
  import Header from './common/Header';
  
  class App extends React.Component {
    render() {
      return (
        <div className="container-fluid">
          <Header />
          { this.props.children }
        </div>
      );
    }
  }
  
  App.PropTypes = {
    children: PropTypes.object.isRequired
  };
  
  export default App;