Rename chartwithgrid story

stories/ChartWithGridArea.js

@@ -13,7 +13,7 @@ import '../node_modules/react-vis/dist/style.css';
 
 const MSEC_DAILY = 86400000;
 
-export default class BasicChartWithGrid extends React.Component {
+export default class BasicChartWithGridArea extends React.Component {
   render() {
     const timestamp = new Date('September 9 2017').getTime();
     return (

stories/index.stories.js

@@ -5,7 +5,7 @@ import { action } from '@storybook/addon-actions';
 import { linkTo } from '@storybook/addon-links';
 
 import { Button, Welcome } from '@storybook/react/demo';
-import ChartWithGrid from './ChartWithGrid';
+import ChartWithGrid from './ChartWithGridArea';
 
 storiesOf('Welcome', module).add('to Storybook', () => <Welcome showApp={linkTo('Button')} />);