Add submission # 616

#616

Author: ArduinoBot

registry.txt

@@ -4426,3 +4426,4 @@ https://github.com/stm32duino/ST25R95.git|Contributed|STM32duino ST25R95
 https://github.com/adafruit/Adafruit_VL53L1X.git|Recommended|Adafruit VL53L1X
 https://github.com/DFRobot/DFRobot_DS323X.git|Contributed|DFRobot_DS323X
 https://github.com/Gbertaz/NonBlockingDallas.git|Contributed|NonBlockingDallas
+https://github.com/OSSLibraries/Arduino_MFRC522v2.git|Contributed|RFID_MFRC522v2