similar ui to current bower.io

UI tweaks to align with current [bower.io](http://bower.io), 

+ yellow header
+ Helvetica neue font
+ left aligned header

![screen shot 2014-07-16 at 4 14 53 pm](https://cloud.githubusercontent.com/assets/85566/3604974/0fa51842-0d26-11e4-93cb-57addbf9c410.png)

This blue is a bit darker, so it shows up better in smaller text sizes. The brand blue `#00ACEE` can be used, but only with bigger text sizes.