updating customer model to contain multiple cards
updated to newest API, modified structs to reflect new API and adjusted tests to pass against on new API
added a couple more fields to customer.  also updated card to allow creation
added card creation
Merge pull request #17 from elithrar/master

Added Examples for Stripe.js & Stripe Checkout
Merge pull request #18 from irwinb/master

Update to 2013-08-13 API