fixed zeptorc file and added elixir highlighting

vimrc

@@ -90,6 +90,7 @@ Bundle 'digitaltoad/vim-jade'
 Bundle 'zepto-lang/zepto-vim'
 Bundle 'hellerve/luna-vim'
 Plugin 'rust-lang/rust.vim'
+Plugin 'elixir-lang/vim-elixir'
 
 " Custom bundles
 if filereadable(expand("~/.vim.local/bundles.vim"))

zeptorc

@@ -1,4 +1,4 @@
-(zepto:add-to-path (++ (get-home-dir) "/.zeps/"))
+(zepto:add-to-path (++ (os:get-home-dir) "/.zeps/"))
 
 (define (*prompt*)
   "my personal prompt customization