Extracting routes

router.diff

port Backbone from 'backbone';
import $ from 'jquery';

+ import routes from './routes';

export default Backbone.Router.extend({
- routes: {
-   'about': 'about',
- },
+ routes,

  about() {
    $('#app').html(`You're viewing about page. It was loaded in async way`);
  }
});

routes.js

export default {
  'about': 'about',
};