Updated comments and pin layout
Updated comments and pin layout

mirko314/rfid,northDacoder/rfid,CapeSepias/rfid,yaalsn/rfid,juantejedavz/rfid,LaloHao/rfid,prikevs/rfid,1upon0/rfid,irhastofa/rfid,sophiekovalevsky/rfid,smallkid/rfid,Rotzbua/rfid,tamchau2809/rfid,webdevbrian/rfid,hramrach/rfid,lpr0lpd/rfid,r44947/rfid,Rotzbua/rfid,miguelbalboa/rfid,mangine/mraa_MFRC522