Add vimux-golang to README

Author: benmills

README.mkd

@@ -29,6 +29,7 @@ _Notes:_
 * [vim-turbux](https://github.com/jgdavey/vim-turbux) Turbo Ruby testing with tmux
 * [vimux-pyutils](https://github.com/julienr/vimux-pyutils) A set of functions for vimux that allow to run code blocks in ipython
 * [vimux-nose-test](https://github.com/pitluga/vimux-nose-test) Run nose tests in vimux
+* [vimux-golang](https://github.com/benmills/vimux-golang) Run go tests in vimux
 
 ## Usage