README.md

Compiling

1. sudo pacman -S arm-none-eabi-newlib arm-none-eabi-gcc arm-none-eabi-binutils
2. Set up mbed somehow?
3. mbed compile -m ARDUINO_NANO33BLE -t GCC_ARM
4. bossac -U -i -e -w ./BUILD/ARDUINO_NANO33BLE/GCC_ARM/appnamehere.bin -R (using Arduino's bossac tweak)