Alright. Sorry for the delay, our team 3130 happened to win its second regional and had to go to the world champs. So all our resources were taken by the preps. Now as the competitions season is over I managed to scratch some time to publish our code onto GitHub. Here it is.
https://github.com/team3130/TBA-push-to-Slack/
That's a very basic example we tested in our Slack team. So far only "Upcoming Match" and "Match Score" notifications are implemented. And even those are very basic.
I'd love to hear suggestions how to make the project more collaborative so others could contribute. For the starters the major conflict I already can see would be that if this project grows further everyone will want their own formatting for messages. For the meantime I have no idea how to handle that. Please chime in.