Card checkout harness Demo

Finishes the step Postman cannot: entering a card. Paste the ticket from POST /v1/payment/card, pay, then confirm in Postman with POST /v1/payment/card/confirm.

Ticket
Talking to Moneris qa. Sandbox card 4242 4242 4242 4242, any future expiry, any CVV. An amount ending in .05 forces a decline.
Checkout
Callbacks
Waiting.