Bootstrap based Layout

Hey Eric,

Finally managed to squeeze in a few moments to round out a bootstrap based template for specs2. Feel free to do what ever you want with it.

![screen shot 2013-06-24 at 4 21 19 pm](https://f.cloud.github.com/assets/39248/693682/c440cfba-dc96-11e2-92c4-d069415c23af.png)