Shopify/active_merchant — pull request #1180 by bslobodin (2014-05-08 20:07:50+00:00)
Title: Fix CreditCard check for NMI

@bizla @edward /cc @Shopify/payments.

NMI was only expecting instances of ``ActiveMerchant::Billing::CreditCard``, this fixes that to be in line with what other gateways do in this case.