Add new vagrant box images.
  * Remove beta warnings
  * Remove references to "quickstart" as that's a seperate tool, we now refer to these as just the Juju vagrant boxes.
Fix whitespace
Merge pull request #102 from castrojo/add-trusty-vagrant

Add trusty vagrant
Adapt to newer vanilla tar.gz content
Merge pull request #103 from didrocks/patch-3

Adapt to newer vanilla tar.gz content