Shopify/active_merchant — pull request #811 by buoyant (2013-08-20 15:33:30+00:00)
Title: changes for payu integration

1. Getting merchant_id and secret_key from app environment.
2. Replaced productinfo with secret_key in generate_checksum method of helper class.
3. Sending params to notification on response.

Note: Tested with test credentials.
Any questions mail me on sandeep.kumar@payu.in