Adding subscriptions
Merge branch 'master' into subscriptions

Conflicts:
	Gemfile
Subscription
subscriptions
Wrap results with meta
moved to response object
adding back in call methods
wip: tweaks to get Call#sucessful and #errors to work
organizing specs
Adding tests
wip
recursive symbolize keys
Adding customer resource
Adding update functionality
adding #destroy call
Adding products
Adding migration support and product/customer specs
Adding create method to resource
Fix post bug
added root level key to migration preview params