Shopify/active_merchant — pull request #1042 by bslobodin (2014-02-20 16:48:09+00:00)
Title: Rename Conekta's :login back to :key

I now believe #1031 was slightly misguided and we should keep using ``:key`` for Conekta gateways. This PR reverts that change and fixes 2 failing remote tests.

@odorcicd and @ntalbott to review, cc @Shopify/payments.