To make this easier, we will use this gem: slack-ruby-bot-server-events
- this has
teamsendpoints, one of which handles OAuth flow of exchanging a temporary code for actual token - however, it assumes there's some front end JS that will POST the
codeto the teams endpoint, we will try to do this without any JS - it also uses GrapeAPI, have to initialize with config.ru
Which in turn depends on: slack-ruby-bot-server
Which in turn depends on: slack-ruby-client
Very important file for integrating slack-ruby-bot-server-events