Created a readme.txt for the Intel Galileo Gen 1/2 that describes,
* How to build for the Intel Galileo Gen 1/2
* How to access the console on the Intel Galileo Gen 1/2
Signed-off-by: Ray Kinsella <ray.kinsella@intel.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>