Expand configuration docs (fixes GH-2560)
Expand configuration docs (fixes GH-2560)

beeftornado/sentry,ifduyue/sentry,BuildingLink/sentry,mvaled/sentry,zenefits/sentry,alexm92/sentry,gencer/sentry,mvaled/sentry,nicholasserra/sentry,jean/sentry,jean/sentry,nicholasserra/sentry,fotinakis/sentry,zenefits/sentry,looker/sentry,mvaled/sentry,mvaled/sentry,jean/sentry,JamesMura/sentry,BuildingLink/sentry,BuildingLink/sentry,JackDanger/sentry,ifduyue/sentry,jean/sentry,mitsuhiko/sentry,alexm92/sentry,daevaorn/sentry,zenefits/sentry,looker/sentry,JamesMura/sentry,looker/sentry,looker/sentry,ifduyue/sentry,ifduyue/sentry,alexm92/sentry,jean/sentry,daevaorn/sentry,mvaled/sentry,gencer/sentry,gencer/sentry,mvaled/sentry,fotinakis/sentry,BuildingLink/sentry,looker/sentry,JamesMura/sentry,beeftornado/sentry,JackDanger/sentry,fotinakis/sentry,beeftornado/sentry,daevaorn/sentry,zenefits/sentry,JackDanger/sentry,zenefits/sentry,gencer/sentry,mitsuhiko/sentry,gencer/sentry,JamesMura/sentry,nicholasserra/sentry,JamesMura/sentry,ifduyue/sentry,fotinakis/sentry,daevaorn/sentry,BuildingLink/sentry