Matrix link is invite-only

Hello, first of all thanks for all your work on this project, it is very exciting to have at least some part of IPFS working from C/C++.

I tried to join the #ipfs-tiny channel on Matrix, but got an error that it was invite only. Is that intentional, if so, perhaps you could update the README.md to indicate that?

Join link using the Element web client:

Invite only:

It could be that I'm messing up somewhere, but I tried to also join manually through the "room searcher" interface, but that showed that there was no room #ipfs-tiny:matrix.org.