Add submission # 3648

#3648

Author: ArduinoBot

registry.txt

@@ -6531,3 +6531,4 @@ https://github.com/franeum/TI_SN76489.git|Contributed|TI_SN76489
 https://github.com/AdamJHowell/ArrayManager.git|Contributed|FloatArrayManager
 https://github.com/ArtronShop/ArtronShop_LineNotify.git|Contributed|ArtronShop_LineNotify
 https://github.com/skyfroger/RLab.git|Contributed|RLab
+https://github.com/dejwk/roo_time.git|Contributed|roo_time