Add a header for peep errors...
Add a header for peep errors...

...since the shell's collected output is such a line-break-lacking mess.
bsmr-misc-forks/letsencrypt,wteiken/letsencrypt,letsencrypt/letsencrypt,jtl999/certbot,stweil/letsencrypt,TheBoegl/letsencrypt,thanatos/lets-encrypt-preview,jtl999/certbot,dietsche/letsencrypt,twstrike/le_for_patching,lmcro/letsencrypt,wteiken/letsencrypt,jsha/letsencrypt,lmcro/letsencrypt,thanatos/lets-encrypt-preview,DavidGarciaCat/letsencrypt,letsencrypt/letsencrypt,DavidGarciaCat/letsencrypt,jsha/letsencrypt,bsmr-misc-forks/letsencrypt,dietsche/letsencrypt,brentdax/letsencrypt,brentdax/letsencrypt,TheBoegl/letsencrypt,stweil/letsencrypt,mitnk/letsencrypt,mitnk/letsencrypt,twstrike/le_for_patching