Fix spec

This is now a private method; not perfect to do a send to test a private
method, but I think that's a worthwhile trade-off here.
Fix bundle issues
Use github for bonobos spree
Make default task generate dummy app
Add ruby version
Merge pull request #6 from bonobos/fix/specs

Fix spec
Also scope the shipments#mine endpoint by store

As that's what we now use in storefronts.