Update readme for OmniROM

Change-Id: If38dd3f55b9e9a62cc00e64c0d4140f2a405749a
local manifest for OmniROM

Change-Id: I028b98c128fdc8fb919f9654f439c6264a18a8e3
add patches for OmniROM

Change-Id: I96ee512543ad1cd51e6b5d7ccb2b832e5b8305b1