Merge pull request #1 from TonyWildish/master

Initial installation of PhEDEx testbed
install from official repository, not Tonys fork
use r/o path to git to avoid ssh key errors etc
ignore vagrant logfile
use $HOME instead of /home/vagrant to make scripts more generic
make bootstrap more portable to different locations
change VM parameters: 512 MB -> 2 GB, 1 CPU -> 2 CPU
relax checks for Test*_Buffer nodes