Add a note on how to get a Slack invite if you don't have one
Add a note on how to get a Slack invite if you don't have one

petwitter/petwitter.github.io,petwitter/petwitter.github.io,petwitter/petwitter.github.io,paulproteus/DELETEME-sec-tut-website,paulproteus/DELETEME-sec-tut-website,paulproteus/DELETEME-sec-tut-website