Speedy site

Using the Ember.js website on mobile, or on a slow connection, is just terrible. A CDN and responsive layout would improve things greatly, but until we can get that organized this helps. These tests were done with an emulated 3G connection.

![Page load](https://api.monosnap.com/image/download?id=rKPR2qTbE4lXJwSn50dAeXPWq51nd4)
![Page load after improvements](https://api.monosnap.com/image/download?id=X4zlXz1hWVKK9ac3O1aIaFhbqVWREo)