Merge pull request #6 from jfields/master

Adding more style selectors from skeleton.
Use bootstrap classes.
Lets use font awesome because it's awesome.
Tweak a couple buttons styling.
Center the or between buttons.
Fix spec.
Add canonical tag to take advantage of https://github.com/spree/spree/commit/601e2d41e57c33b3a26132aab26ab1bd53c7ba29
Use bootstrap classes on product detail page.
Make features instead of requests for Capybara 2.
Remove skeleton by overriding spree_frontend.css.