change infra to labs in the footer and link to adicu.com/labs

Closes #219 

@natebrennand @brishin 

![screen shot 2014-09-15 at 1 44 59 am](https://cloud.githubusercontent.com/assets/2433509/4267418/aaf229b2-3c9b-11e4-9e50-fc69390009fa.png)