import @timsutton's gist

https://gist.github.com/timsutton/9195541
set CPU ID to boot on Haswell machines

http://ntk.me/2012/09/07/os-x-on-os-x/
merge VirtualBox and VMware templates
Merge branch 'fix/vagrant-group' into feature/virtualbox
default to rsync on VirtualBox

This commit adds a template `Vagrantfile` to the box that will
override the shared folder configuration only for the `virtualbox`
provider.  Other providers should be unaffected.
Merge branch 'master' into feature/virtualbox
Revert "default to rsync on VirtualBox"

This reverts commit 1a131be9ddb4145b354f12928124c09384eb75a0.
README update re: VirtualBox support, VeeWee support
Ignore packer output dirs