content: import React, { Component } from 'react';
  import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider';
  
  import Header from './components/Header';
  import ChartWrapper from './components/Chart';
  
  export default class App extends Component {
  
    render() {
      return (
        <MuiThemeProvider>
          <div>
            <Header />
            <ChartWrapper />
          </div>
        </MuiThemeProvider>
      );
    }
  }