Moved Movim from forums to XMPP

Also improved description.

README.md

@@ -382,7 +382,6 @@ _[IPBX](https://en.wikipedia.org/wiki/IP_PBX) telephony software_
   * [Jappix](https://jappix.com/) - Jappix is an open social platform, that let's you easily get or keep in touch with everyone. ([Source Code](https://github.com/jappix/jappix)) `AGPLv3` `PHP`
   * [Loomio](https://www.loomio.org/) - Loomio is a collaborative decision-making tool that makes it easy for anyone to participate in decisions which affect them. ([Source Code](https://github.com/loomio/loomio)) `AGPLv3` `Ruby`
   * [Mastodon](https://mastodon.social) - Federated microblogging server, an alternative to GNU social. ([Source Code](https://github.com/tootsuite/mastodon)) `AGPLv3` `Ruby`
-  * [Movim](https://movim.eu/) - A brand new social network, full of awesome features in a modern and smart interface. ([Source Code](https://github.com/movim/movim)) `AGPLv3` `PHP`
   * [MyBB](http://www.mybb.com/) - Free, extensible forum software package. ([Source Code](https://github.com/mybb/mybb)) `LGPLv3` `PHP`
   * [Newebe](http://newebe.org/) - A Distributed Social Network. ([Source Code](https://github.com/gelnior/newebe)) `AGPLv3` `Python`
   * [NodeBB](https://nodebb.org/) - Node.js based forum software built for the modern web. ([Source Code](https://github.com/NodeBB/NodeBB)) `GPLv3` `Nodejs`
@@ -421,6 +420,7 @@ _[Extensible Messaging and Presence Protocol](https://en.wikipedia.org/wiki/XMPP
   * [Converse.js](https://conversejs.org/) - A free and open-source XMPP chat client in your browser. ([Source Code](https://github.com/jcbrand/converse.js)) `MPLv2` `Javascript`
   * [JSXC](https://jsxc.org) - A Real-time XMPP web chat application with video calls, file transfer and encrypted communication. There are also versions for Nextcloud/Owncloud and SOGo. ([Source Code](https://github.com/jsxc/jsxc)) `MIT` `Javascript`
   * [Kaiwa](http://getkaiwa.com/) - Web based chat client in the style of common paid alternatives. ([Source Code](https://github.com/digicoop/kaiwa)) `MIT` `NodeJS`
+  * [Movim](https://movim.eu/) - A modern, federated social network based on XMPP, with a fully featured group-chat, subscriptions and microblogging. ([Source Code](https://github.com/movim/movim)) `AGPLv3` `PHP`
   * [Salut à Toi](http://www.salut-a-toi.org/) - Multipurpose, multi frontend, libre and decentralised communication tool. ([Source Code](http://repos.goffi.org/sat)) `AGPLv3` `Python`
     * [Libervia](http://wiki.goffi.org/wiki/Libervia/en) - Web frontend from Salut à Toi. ([Source Code](http://repos.goffi.org/libervia)) `AGPLv3` `Python`