add getting started section
add getting started section

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