content: import React from 'react';
  import Helmet from 'react-helmet';
  import './App.css';
  
  export function App(props) {
    return (
      <div className="App">
        <Helmet
          title="Demo App"
        />
        {React.Children.toArray(props.children)}
      </div>
    );
  }
  
  App.propTypes = {
    children: React.PropTypes.node,
  };
  
  export default App;
  