Add information about the IRC support channel

README.md

@@ -114,6 +114,8 @@ This Ansible playbook can be improved in the following ways:
 
 ## Support
 
-Matrix room: [#matrix-docker-ansible-deploy:devture.com](https://matrix.to/#/#matrix-docker-ansible-deploy:devture.com)
+- Matrix room: [#matrix-docker-ansible-deploy:devture.com](https://matrix.to/#/#matrix-docker-ansible-deploy:devture.com)
 
-Github issues: [spantaleev/matrix-docker-ansible-deploy/issues](https://github.com/spantaleev/matrix-docker-ansible-deploy/issues)
+- IRC channel: `#matrix-docker-ansible-deploy` on the [Freenode](https://freenode.net/) IRC network (irc.freenode.net)
+
+- Github issues: [spantaleev/matrix-docker-ansible-deploy/issues](https://github.com/spantaleev/matrix-docker-ansible-deploy/issues)