*: add slack contact
Add slack chat contact.
@@ -6,6 +6,7 @@ etcd is Apache 2.0 licensed and accepts contributions via GitHub pull requests.
- Email: [etcd-dev](https://groups.google.com/forum/?hl=en#!forum/etcd-dev)
- IRC: #[etcd](irc://irc.freenode.org:6667/#etcd) IRC channel on freenode.org
+- Slack: [#etcd](https://kubernetes.slack.com/messages/C3HD8ARJ5/details/)
## Getting started
