Bower manifest to prepare for Bower registration

Hey peoples - hope you're cool with making the grid into a [Bower](http://bower.io/) component, which will make it easier for the masses to find and use it in their projects - I've been playing around with [Yeoman](http://yeoman.io/) a bit, making a static site generator and it would be sweet if I could use Bower to automagically pull in the latest and greatest grid system ever devised.

What say you?

If you accept the pull request, I'll tag master with a version number and add it to the bower registry.