add: readme to be moved to source root & smash command

to do: figure out a way to do smash somefile and have it cd $OUT
then search for the file and delete that specific file. also, assign
variables to the OTA and $OUTPACKAGE to be smashed also.

Change-Id: Ib6a9429fcf32c4bbefe9d9272d55ec0817f708bf
Signed-off-by: DHOMD <DHO@dho.im>

Conflicts:
	envsetup.sh
Update build command read me with most recent

Change-Id: I5a6400f5a11178102293713239f1c4670f0fb6d7