Update README

Author: mjackson

README.md

@@ -1,13 +1,14 @@
-[![npm package](https://img.shields.io/npm/v/react-router.svg?style=flat-square)](https://www.npmjs.org/package/react-router)
 [![build status](https://img.shields.io/travis/rackt/react-router/master.svg?style=flat-square)](https://travis-ci.org/rackt/react-router)
-[![dependency status](https://img.shields.io/david/rackt/react-router.svg?style=flat-square)](https://david-dm.org/rackt/react-router)
-[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/rackt/react-router?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+[![npm package](https://img.shields.io/npm/v/react-router.svg?style=flat-square)](https://www.npmjs.org/package/react-router)
+[![react-router channel on slack](https://img.shields.io/badge/slack-react--router@reactiflux-61DAFB.svg?style=flat-square)](http://www.reactiflux.com)
 
 React Router
 ============
 
 A complete routing library for React.
 
+**Note: We are currently working hard on some major API changes for version 1.0. To follow our progress, check out the [master](https://github.com/rackt/react-router/tree/master) branch!**
+
 Docs
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