Add responsive styles

Been loving working with middleman thus far, thought this would be a decent way to give back a little bit. If y'all see anything that needs to be changed with this let me know and I'll take care of it.

In addition to the responsive layout this does remove the dependency on blueprint, so when compass is updated things won't blow up.

Tested in Chrome, Safari, FF, and iOS - don't have any Androids on hand to test with.

also, forgive the wonk commit message - first time I've squashed commits and the output of the message was a bit different than I expected.

cheers,
steven