Added ftdetect for mutt-dir.

Author: cofi

vim/vimrc

@@ -96,6 +96,7 @@ endfunc
         autocmd BufNewFile,BufRead *.xpt.vim set ft=xpt.vim
         autocmd BufNewFile,BufRead *zsh/* set ft=zsh
         autocmd BufNewFile,BufRead *vim_local/* set ft=vim
+        autocmd BufNewFile,BufRead *mutt/* set ft=mutt
         autocmd BufNewFile,BufRead *.pyf setlocal ft=python, textwidth=0
         autocmd BufNewFile,BufRead *.bb setlocal ft=text, textwidth=0
     augroup END