Merge pull request #3148 from yichengq/update-contact

Update contact section in README.md

README.md

@@ -91,8 +91,8 @@ Now it's time to dig into the full etcd API and other guides.
 ## Contact
 
 - Mailing list: [etcd-dev](https://groups.google.com/forum/?hl=en#!forum/etcd-dev)
-- IRC: #[coreos](irc://irc.freenode.org:6667/#coreos) on freenode.org
-- Planning/Roadmap: [milestones](https://github.com/coreos/etcd/milestones)
+- IRC: #[etcd](irc://irc.freenode.org:6667/#etcd) on freenode.org
+- Planning/Roadmap: [milestones](https://github.com/coreos/etcd/milestones), [roadmap](./ROADMAP.md)
 - Bugs: [issues](https://github.com/coreos/etcd/issues)
 
 ## Contributing