[FEATURE] Support Vagrant 1.6 version command

Vagrant 1.6 introduces a couple new commands, including the `version` command.
The `version` command shows the currently installed version information and
also checks for new updates available.
[FEATURE] Support Vagrant Share

Vagrant 1.5 introduced Vagrant Share to allow remote access to a Vagrant
environment. This adds support for the `share` and `connect` commands.
[FEATURE] Support Vagrant Cloud commands

Vagrant 1.5 added Vagrant Cloud to share boxes. Some boxes
may be protected, the `login` command allows to access those
protected boxes from Vagrant Cloud.
[FEATURE] Support vagrant global-status

Vagrant 1.6 introduced the `global-status` command which allows
to get a quick overview of all active Vagrant environments for the
currently logged in user.
Improve consistency, remove dots at end of command descriptions
Merge pull request #2787 from irnnr/plugin-vagrant

Support new Vagrant commands
Added my own theme based on powerline and changed install script to
point to my repo.
Added my custom autocomplete and options plugins
Stop autocorrecting certain cmds
updated install.sh to use bash
Add custom/sshsock.zsh to fix tmux fwd agent
Add TMOUT=0 to prevent timeout
Modified zsh options
Added my custom autocomplete and options plugins
updated install.sh to use bash
Add custom/sshsock.zsh to fix tmux fwd agent
Add TMOUT=0 to prevent timeout
Modified zsh options