Closes #1018: Add Wazo, a Free Software IPBX solution based on Asterisk.

README.md

@@ -365,6 +365,7 @@ _[IPBX](https://en.wikipedia.org/wiki/IP_PBX) telephony software_
 - [Freepbx](http://www.freepbx.org) - Web-based open source GUI that controls and manages Asterisk. ([Source Code](http://git.freepbx.org/projects/FREEPBX)) `GPL-2.0` `PHP`
 - [FusionPBX](https://www.fusionpbx.com/) - An open source project that provides a customizable and flexible web interface to the very powerful and highly scalable multi-platform voice switch called FreeSWITCH. ([Source Code](https://github.com/fusionpbx/fusionpbx)) `MPL-1.1` `PHP`
 - [Kazoo](http://2600hz.org/) - KAZOO is an open-source, highly scalable software platform designed to provide carrier-grade VoIP switch functions and features. ([Source Code](https://github.com/2600hz/KAZOO)) `MPL-1.1` `Erlang`
+- [Wazo](http://wazo.community/) - Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API. ([Source Code](https://github.com/wazo-pbx)) `GPL-3.0` `Python/PHP`
 
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