Add InfCloud

[Website](https://www.inf-it.com/open-source/clients/infcloud/), [Demo](https://www.inf-it.com/infcloud/)

A recent integration (2015-09-22) of CalDavZap and CardDavMate, two CalDAV & CardDAV web clients.

README.md

@@ -166,6 +166,7 @@ Some [Groupware](#groupware) solutions also feature calendar/address book editin
   * [ownCloud calendar](https://doc.owncloud.org/server/9.0/user_manual/pim/calendar.html) - The ownCloud Calendar app enables you to create and edit events, synchronize to other calendars you might use, and create new, personalized calendars. ([Source Code](https://github.com/owncloud/calendar-rework)) `AGPLv3` `PHP`
   * [Radicale](http://radicale.org/) - A Simple Calendar and Contact Server. ([Source Code](https://github.com/Kozea/Radicale)) `GPLv3` `Python`
   * [sabre/dav](http://sabre.io/) - A open source CardDAV, CalDAV and WebDAV server. ([Source Code](https://github.com/fruux/sabre-dav)) `MIT` `PHP`
+  * [InfCloud](an open source CalDAV/CardDAV web client implementation) - An open source CalDAV/CardDAV web client implementation. ([Demo](https://www.inf-it.com/infcloud/), [Source Code](https://www.inf-it.com/InfCloud_0.13.1.zip)) `AGPLv3` `Javascript`
 
 
 ## Communication systems