Vagrantfile: updated box URL (previous one was no longer working)
Vagrantfile: updated box URL (previous one was no longer working)

chrisdubya/crafty-vagrant,niceandserious/crafty-vagrant,niceandserious/crafty-vagrant,niceandserious/crafty-vagrant,chrisdubya/crafty-vagrant,niceandserious/crafty-vagrant,chrisdubya/crafty-vagrant,chrisdubya/crafty-vagrant