Creating basebox that bundles default Vagrantfile configuration

This is the basebox that will be uploaded to Vagrant Cloud. This will
allow one-line deployments for any environments that are already
configured for Joyent.
Updating README

It's now up-to-date with the RubyGems installation and Vagrant Cloud basebox
Merge branch 'master' into vagrant-cloud-basebox

Conflicts:
	README.md
Merge pull request #12 from apetresc/vagrant-cloud-basebox

Creating basebox that bundles default Vagrantfile configuration