Shopify/active_merchant — pull request #821 by prsimp (2013-08-25 00:43:52+00:00)
Title: Update Stripe gateway to reflect current currency support

Stripe has [added support](https://stripe.com/blog/introducing-stripe-uk) for the UK (GBP, EUR and USD).

* Add GB to the countries supported by Stripe
* Update the README to reflect CA and GB support