Enhance global styles setup

Setup a global variables file and type style file to setup the styling
for the navigation.

Using a stand-in font for now until setup typography.com account.

![screen shot 2014-10-27 at 3 56 31 pm](https://cloud.githubusercontent.com/assets/1701077/4801052/9210d40e-5e2c-11e4-975f-626ac7a9d9ca.png)