Add vagrant completion for individual VMs

For multi-VM setups some commands take the name of
a virtual machine.  Read the Vagrantfile and offer
suggestions.
Added new function git_remote_status to check if we are ahead, behind or diverged from the remote branch
New theme 'intheloop' which demonstrates the git_remote_status function
Make command-not-found no-op when support not available (e.g. not on Ubuntu)
Fixed cap plugin
Aliases

Modify directory listing aliases to make more sense. Remove conflicting helper
function (mcd conflicts with mtools).
Dollar sign instead of percent in unprivileged user prompt (as in real gentoo)
Change plugin name from cap to capistrano
rsync: add plugin
Updated the frisk theme to display Bazaar branch information as well (based on zedtux.zsh-theme http://j.mp/ikTZJj)
Updating installer to use our own repo

This change isn't ever designed to be pushed beyond our own repo.

-Dx
Adding out repo into the readme :-/

-Dx
Our theme, first rev.

-Dx
Revert "Our theme, first rev."

This reverts commit fa053968eba603d455782beb98a60c0960656a12.
A theme I am happy with, for now :)

-Dx
Idiot boy, got installer URL wrong.

-D
Can't get too much of a good thing ;-)

-Dx
Example screenshot of SpotSpecific_theme.png

-Dx
Update readme pointing to screenshot...

-Dx
Now with valid textile...

-Dx