Update ChangeUID.ino
Update ChangeUID.ino

Updated code to account for serial behavior change in ATMEGA32U4
juantejedavz/rfid,smallkid/rfid,mirko314/rfid,hramrach/rfid,Rotzbua/rfid,LaloHao/rfid,lpr0lpd/rfid,CapeSepias/rfid,webdevbrian/rfid,irhastofa/rfid,northDacoder/rfid,r44947/rfid,tamchau2809/rfid,Rotzbua/rfid,miguelbalboa/rfid,mangine/mraa_MFRC522,yaalsn/rfid,prikevs/rfid,1upon0/rfid,sophiekovalevsky/rfid