NFS mounting issues with VMWare Fusion provider

When bringing up the box for the first time with VMWare Fusion, I received an error when attempting to mount the NFS shared folders. The error was similar to [one reported in the Vagrant project](https://github.com/mitchellh/vagrant/issues/129). I solved the issue by running `vagrant up`, waiting for it to fail, ssh'ing into the machine and running `apt-get install nfs-common`. I then ran `vagrant reload`. Ideally, this package would be installed in the base box prior to provisioning. Perhaps this can be explored as the box is updated to 13.10 as suggested in #67.