README.md changed: Added advice for Vagrant 1.3 users
README.md changed: Added advice for Vagrant 1.3 users

They should use v0.0.8 because it is the last version which is compatible with Vagrant 1.3

legal90/vagrant-parallels,Parallels/vagrant-parallels,legal90/vagrant-parallels,Parallels/vagrant-parallels,Kast0rTr0y/vagrant-parallels,Kast0rTr0y/vagrant-parallels,KillerDesigner/vagrant-parallels,Parallels/vagrant-parallels,KillerDesigner/vagrant-parallels,Kast0rTr0y/vagrant-parallels,Gray-Wind/vagrant-parallels,kidaa/vagrant-parallels,KillerDesigner/vagrant-parallels,kidaa/vagrant-parallels,kidaa/vagrant-parallels,legal90/vagrant-parallels