add coffee script support

.vimrc

@@ -89,6 +89,8 @@ Plug 'moll/vim-node'  " nodejs extras
 Plug 'sidorares/node-vim-debugger', { 'do': 'cd ~/.vim/plugged/node-vim-debugger/ && npm install' }  " nodejs debugger
 command NodeDebug call conque_term#open('node ' . expand('~/.vim/plugged/node-vim-debugger/bin/vim-inspector') . ' "' . expand('%') . '"', ['belowright split'])
 
+Plug 'kchmck/vim-coffee-script'  " CoffeeScript support
+
 call plug#end()
 if !HAS_PLUG
 	PlugInstall