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)
rsync: add rsync- prefixes and use aliases
Merge in recent stuff
add theme with command-line tips support
Rename to _capistrano (completion only)
FrontCube theme with git status
RVM info
Only `setopt correct`, not "correct_all".

Using the correct_all option is too distracting, and needs a lot of
`nocorrect` aliases to work around this.

Using only "correct" to correct the command itself is more friendly.
Added vsplit_tab and split_tab for iTerm. Create new session within a vertical/horizontal split of the tab respectively.
add ability to set custom prefix for cloud theme
Merge branch 'master' of git://github.com/robbyrussell/oh-my-zsh into cloud_parameter