Use makefile
Added function prototypes needed for makefile
Can now scroll string with a space in them

Needed for "No refund"
Update makefile to be used with Pro Mini
Refund money

Not yet tested
Refund is now working
Use digital input for refund button and scroll "No refund" every 10s
Merge branch 'master' of https://github.com/Lauszus/ArduinoVendingMachine

Conflicts:
	ArduinoVendingMachine.h