Update repositories.txt (arduino#4176)

Author: RajasundaramM

repositories.txt

@@ -15,6 +15,7 @@ https://github.com/DigitalCodesign/DC-Core-Library
 https://github.com/tabahi/ESP-Wifi-Config
 https://github.com/tabahi/TabahiConsole
 https://github.com/karolis1115/FTPduino
+https://github.com/RajasundaramM/ReadFilter
 https://github.com/SylvainMontagny/LoRaE5
 https://github.com/nruin7/Arduino-XBox-Controller-Handler
 https://github.com/tdk-invn-oss/pressure.arduino.ICP101XX