complete api

[princemaple]

please suggest what you want that is still missing

General cases

• nested resources 1671832
• singluar resource, e.g. /v1/balance 1971e53
• file upload

Special cases

• refund#create normal CRUD should work
• charge#capture 2c945da
• dispute#close 8a7f9c2
• order#pay d3dbce2
• card#list
• bank_account#list