added Join Chat button

README.md

 ![Rocket.Chat logo](https://rocket.chat/images/logo/logo-dark.svg?v3)
 
-The Ultimate Open Source WebChat Platform
+# The Ultimate Open Source WebChat Platform
+
+[![Rocket.Chat](https://demo.rocket.chat/images/join-chat.svg)](https://demo.rocket.chat/)
+[![Build Status](https://img.shields.io/travis/RocketChat/Rocket.Chat/master.svg)](https://travis-ci.org/RocketChat/Rocket.Chat)
+[![Coverage Status](https://coveralls.io/repos/RocketChat/Rocket.Chat/badge.svg)](https://coveralls.io/r/RocketChat/Rocket.Chat)
+[![Codacy Badge](https://api.codacy.com/project/badge/grade/8580571ba024426d9649e9ab389bd5dd)](https://www.codacy.com/app/RocketChat/Rocket-Chat)
+[![Code Climate](https://codeclimate.com/github/RocketChat/Rocket.Chat/badges/gpa.svg)](https://codeclimate.com/github/RocketChat/Rocket.Chat)
+[![MIT License](https://img.shields.io/badge/license-MIT-blue.svg?style=flat)](https://github.com/RocketChat/Rocket.Chat/raw/master/LICENSE)
+
 
 * [Live Demo](#live-demo)
 * [Mobile apps](#mobile-apps)
@@ -154,16 +162,8 @@ Easy one click install right from your Ubuntu Desktop (coming soon)
 
 [![Ubuntu Software Center](https://raw.githubusercontent.com/Sing-Li/bbug/master/images/ubuntusoft.png)]()
 
-
 # About Rocket.Chat
 
-[![Build Status](https://img.shields.io/travis/RocketChat/Rocket.Chat/master.svg)](https://travis-ci.org/RocketChat/Rocket.Chat)
-[![Codacy Badge](https://api.codacy.com/project/badge/grade/8580571ba024426d9649e9ab389bd5dd)](https://www.codacy.com/app/RocketChat/Rocket-Chat)
-[![Coverage Status](https://coveralls.io/repos/RocketChat/Rocket.Chat/badge.svg)](https://coveralls.io/r/RocketChat/Rocket.Chat)
-[![Code Climate](https://codeclimate.com/github/RocketChat/Rocket.Chat/badges/gpa.svg)](https://codeclimate.com/github/RocketChat/Rocket.Chat)
-[![MIT License](https://img.shields.io/badge/license-MIT-blue.svg?style=flat)](https://github.com/RocketChat/Rocket.Chat/raw/master/LICENSE)
-[![Stories in Ready](https://badge.waffle.io/RocketChat/Rocket.Chat.png?label=ready&title=Ready)](https://waffle.io/RocketChat/Rocket.Chat)
-
 Rocket.Chat is a Web Chat Server, developed in JavaScript, using the [Meteor](https://www.meteor.com/install) fullstack framework.
 
 It is a great solution for communities and companies wanting to privately host their own chat service or for developers looking forward to build and evolve their own chat platforms.