Cleanup common sections in README

Author: stv0g

README.md

@@ -9,8 +9,8 @@
   <a href="https://sourcegraph.com/github.com/pion/rtcp?badge"><img src="https://sourcegraph.com/github.com/pion/rtcp/-/badge.svg" alt="Sourcegraph Widget"></a>
   <a href="https://pion.ly/slack"><img src="https://img.shields.io/badge/join-us%20on%20slack-gray.svg?longCache=true&logo=slack&colorB=brightgreen" alt="Slack Widget"></a>
   <br>
-  <a href="https://travis-ci.org/pion/rtcp"><img src="https://travis-ci.org/pion/rtcp.svg?branch=master" alt="Build Status"></a>
-  <a href="https://pkg.go.dev/github.com/pion/rtcp"><img src="https://godoc.org/github.com/pion/rtcp?status.svg" alt="GoDoc"></a>
+  <img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/pion/rtcp/test.yaml">
+  <a href="https://pkg.go.dev/github.com/pion/rtcp"><img src="https://pkg.go.dev/badge/github.com/pion/rtcp.svg" alt="Go Reference"></a>
   <a href="https://codecov.io/gh/pion/rtcp"><img src="https://codecov.io/gh/pion/rtcp/branch/master/graph/badge.svg" alt="Coverage Status"></a>
   <a href="https://goreportcard.com/report/github.com/pion/rtcp"><img src="https://goreportcard.com/badge/github.com/pion/rtcp" alt="Go Report Card"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-yellow.svg" alt="License: MIT"></a>
@@ -23,14 +23,15 @@ See [DESIGN.md](DESIGN.md) for an overview of features and future goals.
 The library is used as a part of our WebRTC implementation. Please refer to that [roadmap](https://github.com/pion/webrtc/issues/9) to track our major milestones.
 
 ### Community
-Pion has an active community on the [Golang Slack](https://invite.slack.golangbridge.org/). Sign up and join the **#pion** channel for discussions and support. You can also use [Pion mailing list](https://groups.google.com/forum/#!forum/pion).
+Pion has an active community on the [Slack](https://pion.ly/slack).
 
-We are always looking to support **your projects**. Please reach out if you have something to build!
+Follow the [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
 
+We are always looking to support **your projects**. Please reach out if you have something to build!
 If you need commercial support or don't want to use public methods you can contact us at [team@pion.ly](mailto:team@pion.ly)
 
 ### Contributing
-Check out the **[contributing wiki](https://github.com/pion/webrtc/wiki/Contributing)** to join the group of amazing people making this project possible:
+Check out the **[contributing wiki](https://github.com/pion/webrtc/wiki/Contributing)** to join the group of amazing people making this project possible: [AUTHORS.txt](./AUTHORS.txt)
 
 ### License
 MIT License - see [LICENSE](LICENSE) for full text