build-yocto-wandboard: First attempt at Dockerfile

Signed-off-by: Gianpaolo Macario <gianpaolo_macario@mentor.com>
build-yocto-wandboard: Add build.sh

Signed-off-by: Gianpaolo Macario <gianpaolo_macario@mentor.com>
build-yocto-wandboard: Add run.sh

    Signed-off-by: Gianpaolo Macario <gianpaolo_macario@mentor.com>
Merge pull request #25 from gmacario/build-yocto-wandboard

Build a Yocto-based distro for the Wandboard