Update README to drop mailing list

Also update the version.

README.md

@@ -2,7 +2,7 @@
 
 #### Latest release
 
-**v0.8.0**
+**v0.8.1**
 Read the [change log](https://github.com/draios/falco/blob/dev/CHANGELOG.md)
 
 Dev Branch: [![Build Status](https://travis-ci.org/draios/falco.svg?branch=dev)](https://travis-ci.org/draios/falco)<br />
@@ -33,7 +33,6 @@ Documentation
 
 Join the Community
 ---
-* Contact the [official mailing list](https://groups.google.com/forum/#!forum/falco) for support and to talk with other users.
 * Follow us on [Twitter](https://twitter.com/sysdig) for general falco and sysdig news.
 * This is our [blog](https://sysdig.com/blog/), where you can find the latest [falco](https://sysdig.com/blog/tag/falco/) posts.
 * Join our [Public Slack](https://slack.sysdig.com) channel for sysdig and falco announcements and discussions.