Add documentation for middleware endpoints
Add documentation for middleware endpoints

myochum/Triviabot,stopsatgreen/botkit-slack,EliKrumholz/botkit,howdyai/botkit,adam-nnl/omgwtfbbq-bot,tmtkg/botkit,howdyai/botkit,healthchatnow/hcn,pickettd/slack-oregon-trail,howdyai/botkit,ouadie-lahdioui/botkit,samuelsan/YelpBot,stopsatgreen/botkit-messenger,howdyai/botkit,acrollet/botkit,dcortes22/picnic,grindcore819/slackathonMTL,DJ1K1/botkit,twhit027/lewd-bot,gabrielfirmacion/frontdoor-demo,cbuehnerkemper/botkit-copy,dhulser/slack-reporting-bot,DJ1K1/botkit