Update embed document titles with sandbox title

Author: Ives van Hoorne

config/webpack.config.js

@@ -1,4 +1,3 @@
-// prettier-ignore
 const webpack = require('webpack');
 const path = require('path');
 const paths = require('./paths');

src/embed/App.js

@@ -112,6 +112,9 @@ export default class App extends React.PureComponent {
           m => m.title === 'index.js' && m.directoryShortid == null,
         ).shortid;
 
+      document.title = response.data.title
+        ? `${response.data.title} - CodeSandbox`
+        : 'Embed - CodeSandbox';
       this.setState({ sandbox: response.data, currentModule });
     } catch (e) {
       this.setState({ notFound: true });