celebratory 404

Eh.. it's a start:

![screen shot 2014-11-10 at 4 39 20 pm](https://cloud.githubusercontent.com/assets/2289/4986489/4e37be22-693b-11e4-835b-cba373ee9ab2.png)

@rockbot, what do you think? Is making it look like the package page a dumb idea? What would be better?