Add documentation for OS X bootstrap script
Add documentation for OS X bootstrap script

BKreisel/letsencrypt,TheBoegl/letsencrypt,DavidGarciaCat/letsencrypt,brentdax/letsencrypt,hsduk/lets-encrypt-preview,kuba/letsencrypt,Sveder/letsencrypt,jsha/letsencrypt,piru/letsencrypt,VladimirTyrin/letsencrypt,goofwear/letsencrypt,stweil/letsencrypt,mitnk/letsencrypt,thanatos/lets-encrypt-preview,jsha/letsencrypt,xgin/letsencrypt,mitnk/letsencrypt,BillKeenan/lets-encrypt-preview,lbeltrame/letsencrypt,mrb/letsencrypt,g1franc/lets-encrypt-preview,jtl999/certbot,ghyde/letsencrypt,dietsche/letsencrypt,thanatos/lets-encrypt-preview,letsencrypt/letsencrypt,bsmr-misc-forks/letsencrypt,kuba/letsencrypt,hsduk/lets-encrypt-preview,wteiken/letsencrypt,lmcro/letsencrypt,g1franc/lets-encrypt-preview,goofwear/letsencrypt,piru/letsencrypt,BillKeenan/lets-encrypt-preview,wteiken/letsencrypt,mrb/letsencrypt,lbeltrame/letsencrypt,Sveder/letsencrypt,letsencrypt/letsencrypt,VladimirTyrin/letsencrypt,martindale/letsencrypt,DavidGarciaCat/letsencrypt,ghyde/letsencrypt,brentdax/letsencrypt,sjerdo/letsencrypt,lmcro/letsencrypt,dietsche/letsencrypt,xgin/letsencrypt,bsmr-misc-forks/letsencrypt,twstrike/le_for_patching,sjerdo/letsencrypt,twstrike/le_for_patching,martindale/letsencrypt,BKreisel/letsencrypt,stweil/letsencrypt,TheBoegl/letsencrypt,jtl999/certbot