Create Contributors.md
Create Contributors.md

Paul suggested we remove his non-functional @analog.com email in many of the files.

This is the first step for that.

Signed-off-by: Robin Getz <c66e5a86ef9317cf35cecb2ed063996b2100ed4b@analog.com>

analogdevicesinc/libiio,analogdevicesinc/libiio,analogdevicesinc/libiio,analogdevicesinc/libiio