Add Zeus support, smartly decide to use bundler or zeus

refs skalnik/vim-vroom#28
Mention that the default value for zeus is 1 in the doc
Update for Vimux 1.0.0
Add option to use dispatch
Use :Dispatch to run commands when appropriate
Document g:vroom_use_dispatch
Merge pull request #38 from skalnik/vimux-v1

Update for Vimux 1.0.0
Merge pull request #35 from eMxyzptlk/zeus_support

Add Zeus support, smartly decide to use bundler or zeus
Verify :Dispatch command exists
Merge "Add support for Dispatch" #39

Conflicts:
	autoload/vroom.vim
Fixing typo 'dispatch' in docs
Merge pull request #41 from bryansum/master

Typo in docs
clear screen as part of the command

This is a little faster and it also deals with race conditions when
`&t_te` and `t_ti` are doing things like enabling/disabling focus
tracking with vitality.vim.