hack-a-thon: add directions for windows and linux For the OSFC hack-a-thon we will need a special build process in order to adequately test the Minnowboard software. This commit adds instructions for both windows (visual studio) and linux (gcc) participants. Contributed-under: TianoCore Contribution Agreement 1.1. Signed-off-by: Stephano Cetola <[email protected]>

Stephano Cetola committed Sep 4, 2018