#386 Move repo to its new home at TumblThreeApp.

- Updates README.md to reflect project changes.

README.md

@@ -1,5 +1,9 @@
 # TumblThree - A Tumblr Blog Backup Application
 
+[![Join the chat at https://gitter.im/TumblThree/community](https://badges.gitter.im/TumblThree/community.svg)](https://gitter.im/TumblThree/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) ![Github Releases](https://img.shields.io/github/downloads/johanneszab/TumblThree/total.svg?style=plastic) ![Github Stars](https://img.shields.io/github/stars/johanneszab/TumblThree.svg?style=plastic) ![Latest Github release date](https://img.shields.io/github/release-date/johanneszab/TumblThree.svg)
+
+**To facilitate TumblThrees development within a larger community, TumblThree is moving to its new home at a github organization. For new releases, issues and community/developer chat at gitter, check out its new home: [TumblThreeApp](https://github.com/TumblThreeApp/TumblThree)**
+
 TumblThree is the code rewrite of [TumblTwo](https://github.com/johanneszab/TumblTwo), a free and open source Tumblr blog backup application, using C# with WPF and the MVVM pattern. It uses the [Win Application Framework (WAF)](https://github.com/jbe2277/waf). It downloads photo, video, audio and text posts from a given tumblr blog.
 
 _Read this in other languages: [简体中文](https://github.com/Emphasia/TumblThree-zh)._