Add bower.json for Bower support

If this is merged into `master`, it'll need to be tagged as version
0.2.0 so that Bower will work.

    git tag -a v0.2.0

After that happens, you'll be able to `bower install qwerty-hancock`,
which is sweet.
Add Raphael as a Bower dependency
Merge pull request #5 from EvanHahn/bower

Bower