EmberJS email client example incomplete?

I'm just getting started with EmberJS and saw the "routing" example on the emberjs.com page. It takes the form of a mail client.

I've downloaded all the files (app.js, application.hbs, etc) but can't figure out how to get it to "work".

There seems to be missing an HTML as the entry point?

OR, if nothing is missing, how do I view this app within a browser?