Shopify/active_merchant — pull request #1398 by louiskearns (2014-09-29 03:15:48+00:00)
Title: add track_data support to usaepay

Add magstripe support for the [USAePay Transaction](http://wiki.usaepay.com/developer/transactionapi#ccsale_-_credit_card_sale) gateway.

Please review @melari @j-mutter
cc @andrewpaliga