Add brewfile support, closes #469

syntax/brewfile.vim

@@ -0,0 +1,23 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'brewfile') == -1
+
+" Vim syntax file
+" Language:    Brewfile
+" Maintainer:  Baptiste Fontaine <b@ptistefontaine.fr>
+" URL:         https://github.com/bfontaine/Brewfile.vim
+" Last Change: 2015 Jun 18
+
+if exists("b:current_syntax")
+  finish
+endif
+
+" Load ruby syntax
+source $VIMRUNTIME/syntax/ruby.vim
+unlet b:current_syntax
+
+syn keyword brewfileDirective brew cask tap mas cask_args
+
+hi def link brewfileDirective Keyword
+
+let b:current_syntax = "brewfile"
+
+endif