Adjusted Vagrantfile to launch initially with no shares.
Updated readme to include information on the new Drupal-NFS cookbook.
Merge branch 'master' into 89-re-work-share-arch

Conflicts:
	Vagrantfile
Removed virtualbox reference.
Merge pull request #129 from chrisolof/89-re-work-share-arch

Resolves #89:  Assets folder share architecture re-worked