add more docs for conversations
add more docs for conversations

healthchatnow/hcn,howdyai/botkit,acrollet/botkit,dhulser/slack-reporting-bot,DJ1K1/botkit,ouadie-lahdioui/botkit,howdyai/botkit,howdyai/botkit,howdyai/botkit,EliKrumholz/botkit,DJ1K1/botkit,samuelsan/YelpBot