docs: few details on newly supported boards

Signed-off-by: deadprogram <ron@hybridgroup.com>

README.md

@@ -210,8 +210,15 @@ For example, this command can be used to compile and flash an Adafruit Circuit P
 
 	tinygo flash -target circuitplay-bluefruit ./examples/circuitplay
 
+There are other boards with TinyGo support that also use the same UF2 bootloader with pre-loaded SoftDevice. They include:
+
+* [Nice Keyboards nice!nano](https://nicekeyboards.com/products/nice-nano-v1-0)
+* [Makerdiary nRF52840 MDK USB Dongle](https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/)
+
 ### BBC micro:bit
 
+#### Version 1
+
 The [BBC micro:bit](https://microbit.org/) uses an nRF51 chip with a CMSIS-DAP interface.
 
 You will need to install OpenOCD (http://openocd.org/) to flash the board.
@@ -225,6 +232,12 @@ Once you have copied the SoftDevice firmware to the BBC micro:bit, you can then
 
     tinygo flash -target=microbit-s110v8 ./examples/heartrate
 
+#### Version 2
+
+The [BBC micro:bit v2](https://microbit.org/new-microbit/) uses an nRF52833 chip with a CMSIS-DAP interface.
+
+Support for the v2 will be available soon.
+
 ### Supported Chips
 
 The following Nordic Semiconductor chips are currently supported: