Fixed PIN Assignment

Signed-off-by: Christian Ege <k4230r6@gmail.com>
Added library for the DS3231 breakout board

Please consider this as alpha grade

Signed-off-by: Christian Ege <k4230r6@gmail.com>
Added library for NRF24l01 breakout


Please consider this as alpha grade.

Signed-off-by: Christian Ege <k4230r6@gmail.com>