micro:bit / Mbed 2 deprecated microbit_presenter

Based on the example USB HID keyboard https://developer.mbed.org/users/jbru/code/BLE_HID_KeyboardStreamDemo/

Dependencies:   BLE_API mbed nRF51822

Fork of HID-kb by Microbug

Diff: nRF51822.lib

Revision:
3:7d7822143a2d
Parent:
2:fd2697cadbd3