(GH-2) Remove vagrant from Gemfile

Vagrant is going to be deprecated as a gem in the future. This patch modifies
the instructions informing the user to download a copy of Vagrant directly
instead.

In the master release of veewee, there will be support for exporting boxes
without vagrant. However until that gem is released we still have a
documentation dependency on vagrant.

Signed-off-by: Ken Barber <ken@bob.sh>
Built new definitions based on updated veewe templates

Renamed baseboxes to fit more specific naming scheme based on discussion
with kbarber.  All other changes pushed upstream to veewee project and then
copied back here.