Update README.md

Author: hathach

README.md

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 This repository contains the Arduino BSP for Adafruit Bluefruit nRF52 series:
 
 - Adafruit CLUE nRF52840
+- [Adafruit Circuit Playground Bluefruit](https://www.adafruit.com/product/4333)
 - [Adafruit Feather nRF52832](https://www.adafruit.com/product/3406)
 - [Adafruit Feather nRF52840 Express](https://www.adafruit.com/product/4062)
-- [Adafruit Circuit Playground Bluefruit](https://www.adafruit.com/product/4333)
-- Adafruit ItsyBitsy nRF52840
+- Adafruit Feather nRF52840 Sense
+- [Adafruit ItsyBitsy nRF52840 Express](https://www.adafruit.com/product/4481)
 - Adafruit Metro nRF52840 Express
 
 Following boards are also included but are not officially supported: