Fixed debit
Merge pull request #6 from pnegahdar/patch-1

Fixed debit
define pattern for appears_on_statement_as
order_href and appears_on_statement_as can be null in the request
more descriptive
simplify what's allowed on the debit soft descriptor
maximum
soft descriptor
Merge remote-tracking branch 'matin/revision1' into rev1

Conflicts:
	requests/_models/card_hold.json
	requests/_models/credit.json
	requests/_models/debit.json