Merge pull request #341 from msherry/master

Add is_verified field to cards, indicating whether verification could be performed.
start process for switching to json template instead of rst
clean things up a bi
correct format
cards resource
bank accounts resource
cards.is_verified
debits resource
add status to debits
don't supporting paying out to a card
customer can be null on debit
refunds resource
credits resource
reversals resource
bank account verifications resource
add Card Authorizations resource
customers.merchant_status
errors.rst is no longer valid in this format
address is not a resource
support larger credits