add not on new example

README.md

@@ -34,9 +34,10 @@ Missing:
 
 ## Example
 
-See `examples` for example applications. Currently there is only one, for the nRF52 based using the [`nrf-sdc`](https://github.com/alexmoon/nrf-sdc) crate.
+See `examples` for example applications. Currently there are two examples:
 
-NOTE: There is also an example `serial-hci` which should in theory work with any serial HCI adapter, but this has not been tested.
+* `nrf-sdc` for the nRF52 based using the [`nrf-sdc`](https://github.com/alexmoon/nrf-sdc) crate.
+* `serial-hci` which runs on a PC using a HCI controller attached via a serial port (Such as [this Zephyr sample](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/bluetooth/hci_uart/README.html)).
 
 ## License