Shopify/active_merchant — pull request #908 by odorcicd (2013-11-11 20:28:36+00:00)
Title: Fix BitPay implementation

@orenmazor @tahnok /cc @jduff

This fixes the BitPay implementation by:
- Generating invoice during form rendering and with all the form fields
- Fixing the Notification status and a view of the other needed methods
- Implementing `#acknowledge` to fetch the data from BitPay and compare the info