README: Update to reflect new location on github
README: Update to reflect new location on github

Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

fboudra/meta-96boards,96boards/meta-96boards,kraj/meta-96boards,mrchapp/meta-96boards,kraj/meta-96boards