Merge pull request #858 from mikeumus/patch-1

 docs(readme.md): spelling fix "oon" to "on"

README.md

@@ -95,7 +95,7 @@ You have successfully started an etcd on a single machine and written a key to t
 ## Contact
 
 - Mailing list: [etcd-dev](https://groups.google.com/forum/?hl=en#!forum/etcd-dev)
-- IRC: #[coreos](irc://irc.freenode.org:6667/#coreos) oon freenode.org
+- IRC: #[coreos](irc://irc.freenode.org:6667/#coreos) on freenode.org
 - Planning/Roadmap: [milestones](https://github.com/coreos/etcd/issues/milestones)
 - Bugs: [issues](https://github.com/coreos/etcd/issues)