In glancing through the source of ActiveMerchant, I think the only
thing you'll need to do is to add :discover to the supported_cardtypes
in braintree.rb. Also, make sure that your merchant account is setup
to handle Discover cards at Braintree. If you have any trouble,
contact me directly at deve...@getbraintree.com.
Regards,
Josh
--
Cody Fauser
http://shopify.com - e-commerce done right
http://www.codyfauser.com - blog
http://peepcode.com/products/activemerchant-pdf - ActiveMerchant PeepCode
http://www.oreilly.com/catalog/rjsrails - RJS Templates for Rails