Fix Facebook link (readme)

Change-Id: I7daf64ac2d83e783383debee34019b90ac2f27b4
use our own guide to prepare the machine

Change-Id: Iea10d8207df7fa1a36c2f57e2a30c965d2cc9e2b
Merge branch 'pac-4.4' of git://github.com/PAC-man/pacman into pac-4.4