Add this piece to his vimrcto tell Vim to automatically discover the location / quickfix window after the :make, :grep, :lvimgrepand friends, if there is a valid location / error:
augroup myvimrc
autocmd!
autocmd QuickFixCmdPost [^l]* cwindow
autocmd QuickFixCmdPost l* lwindow
augroup END
If you do not want Vim to go to the first match, use the flag j:
:vimgrep /foo/j **/*.md
:help :vimgrep.