Provisioning shell scripts that should work on windows too

[mhulse]

https://groups.google.com/d/msg/vagrant-up/k2aUobRmn1A/ze6qSjSeCwAJ

I really need a Windows box to test on. I disable the default /vagrant share on Windows (assuming that shared dirs are not supported, which I need to confirm).

Because the default share is disabled, the bootstrap scripts do not get copied to the vm.

The above is a workaround to this.