add text telling people to include server config (#4745)
add text telling people to include server config (#4745)


jsha/letsencrypt,stweil/letsencrypt,lmcro/letsencrypt,stweil/letsencrypt,lmcro/letsencrypt,letsencrypt/letsencrypt,jsha/letsencrypt,letsencrypt/letsencrypt