Updated README.md to include Mattermost configuration
Screenshot included
WHY
Many people/ small teams are migrating over to Mattermost with the recent changes to Slack. With this update, they'll be able to migrate this awesome tool with them and continue to receive their updates.
WHAT
Mattermost
as a notifierWHY
Many people/ small teams are migrating over to
Mattermost
with the recent changes toSlack
. With this update, they'll be able to migrate this awesome tool with them and continue to receive their updates.