Added CreateInvoiceMakePayment.
This sketch can make an invoice on the web server and then allow the consumer to make payments using their NFC devices

Problems:
- AVR crashes after each payment, therefore it must be resetted after each payment
:
Added CreateInvoiceMakePayment

This sketch allows the Arduino Uno to be able to handle payments that is being received over NFC interaction
Merge branch 'master' of github.com:jeanbritz/ArduinoSkripsie