Slack invitation redirect
Issue: The slack invite link even set as "do not expire", expires after a certain number of signups
Fix: Update the invite link via Github.
1. Create a new link. Open your Slack and follow...
. 2,
. 4.
5. 
2. Got to Github
Got to https://github.com/nycmeshnet/slack-redirect/blob/master/index.html
Create a new PR using the new Slack invite link. Edit line 8 with the new invite link.
