Fixes spree spec support.
Fixes spree spec support.

dgross881/spree_multi_currency,raulpopadineti/spree_multi_currency,raulpopadineti/spree_multi_currency,sspinc/spree_multi_currency,dgross881/spree_multi_currency,raulpopadineti/spree_multi_currency,spree-contrib/spree_multi_currency,spree-contrib/spree_multi_currency,dgross881/spree_multi_currency,sspinc/spree_multi_currency,spree-contrib/spree_multi_currency,sspinc/spree_multi_currency