Add a social networks & forum - Symphony

A modern community (forum/SNS/blog) platform written in Java.

https://github.com/b3log/symphony

README.md

@@ -363,6 +363,7 @@ _[IPBX](https://en.wikipedia.org/wiki/IP_PBX) telephony software_
   * [Pump.io](http://pump.io/) - Stream server that does most of what people really want from a social network. ([Source Code](https://github.com/e14n/pump.io)) `Apache` `Nodejs`
   * [Reddit](https://www.reddit.com/) - Social networking and news website where registered community members can submit content. ([Demo](https://www.reddit.com/), [Source Code](https://github.com/reddit/reddit)) `CPALv1` `Python`
   * [RedMatrix](https://github.com/redmatrix/redmatrix) - Complete decentralised publishing, sharing, and communications system. `MIT` `PHP`
+  * [Symphony](https://github.com/b3log/symphony) - A modern community (forum/SNS/blog) platform written in Java. ([Demo](https://hacpai.com), [Source Code](https://github.com/b3log/symphony)) `GPLv3` `Java`
   * [Telescope](http://www.telescopeapp.org/) - An open-source social news app built with Meteor. ([Demo](http://demo.telescopeapp.org/), [Source Code](https://github.com/TelescopeJS/Telescope)) `MIT` `Nodejs`
   * [twister](http://twister.net.co/) - Fully decentralized P2P microblogging platform leveraging  the free software implementations of Bitcoin and BitTorrent protocols. ([Source Code](https://github.com/miguelfreitas/twister-core)) `BSD/MIT` `C++`
   * [Vanilla Forums](https://vanillaforums.org/) - Simple and flexible forum software. ([Source Code](https://github.com/vanilla/vanilla)) `GPLv2` `PHP`