It has been tested on Rails 4.1.6 successfully.

Some feature added and fixed:
1. Alipay support.
2. Fix activemerchant version to 1.43.3 for without helper linking problem
3. Additional note on README 
4. Do not add CSRF token from form data on encrypted_data compressing
5. Notification object fields support for CVS and ATM code return when payment_info_url callback