Create Landing Page

* Use High Voltage
* Set "/" to pages/index if not signed in

![screen shot 2014-12-22 at 2 14 47 pm](https://cloud.githubusercontent.com/assets/8673900/5529690/13c15288-89e5-11e4-8a44-689b327c2ba5.png)

Use the new Ruby 1.9 hash syntax.