Support Spree v1.0.1+

Added support for Spree v1.0.x and v.1.1.x

There is still 2 failing functional tests because I don't know how to make the tests use the proper controller route.  Tested manually and everything is working though.

All the unit and cucumber tests are passing.

Going to be spending some more time on improving this as well since my spree app is going to entirely rely on drop shipping so this extensions going to be quite helpful.  I'll see what I can do about fixing these last 2 functional tests, but everything I've found so far says you can't specify which controller the tests go against when they are namespaced.