Add Icecast to video streaming section (#663)

This adds Icecast to the video streaming section as well, and clarifies that it is an audio and video streaming server in the description. (Ref. #660)

README.md

@@ -603,7 +603,7 @@ See also <https://en.wikipedia.org/wiki/List_of_streaming_media_systems>, <https
   * [cloudtunes](https://github.com/jkbrzt/cloudtunes) - Web-based music player for the cloud. `MIT` `Python/Javascript`
   * [GNU FM](https://gnu.io/fm/) - Running music community websites, alternative to last.fm. ([Source Code](http://git.savannah.gnu.org/cgit/librefm.git/)) `AGPLv3` `PHP`
   * [Groove Basin](http://groovebasin.com/) - A music player server with a web-based user interface inspired by Amarok 1.4 ([Source Code](https://github.com/andrewrk/groovebasin)) `MIT` `Nodejs`
-  * [Icecast 2](http://www.icecast.org/) - streaming audio server which can be used to create an Internet radio station or a privately running jukebox and many things in between. ([Source Code](https://git.xiph.org/?p=icecast-server.git;a=summary)) `GPLv2` `C`
+  * [Icecast 2](http://www.icecast.org/) - streaming audio/video server which can be used to create an Internet radio station or a privately running jukebox and many things in between. ([Source Code](https://git.xiph.org/?p=icecast-server.git;a=summary)) `GPLv2` `C`
   * [koel](http://koel.phanan.net/) - A personal music streaming server that works. ([Source Code](https://github.com/phanan/koel)) `MIT` `PHP`
   * [Libresonic](http://libresonic.org/) - Open-source web-based media streamer and jukebox. A fork of Subsonic's last open-source release, before it switched licenses. `GPLv3` `Java`  
   * [Mopidy](http://mopidy.readthedocs.org/) - Extensible music server. Offers a superset of the mpd API, as well as integration with 3rd party services like Spotify, SoundCloud etc. ([Source Code](https://github.com/mopidy/mopidy)) `Apache` `Python`
@@ -616,6 +616,7 @@ See also <https://en.wikipedia.org/wiki/List_of_streaming_media_systems>, <https
   * [Emby](https://github.com/MediaBrowser/Emby) - A home media server built using other popular open source technologies. - `GPLv2`
   * [Flumotion](http://flumotion.net/) - A streaming media server with intuitive graphical administration tools. ([Source Code](https://github.com/Flumotion/flumotion)) `LGPLv2` `Python`
   * [HTPC Manager](http://htpc.io/) - A fully responsive interface to manage all your favorite media on your HTPC. - `MIT`
+  * [Icecast 2](http://www.icecast.org/) - streaming audio/video server which can be used to create an Internet radio station or a privately running jukebox and many things in between. ([Source Code](https://git.xiph.org/?p=icecast-server.git;a=summary)) `GPLv2` `C`
   * [ReadyMedia](http://sourceforge.net/projects/minidlna/) - A simple media server software, with the aim of being fully compliant with DLNA/UPnP-AV clients. `GPLv2` `C`
   * [Restreamer](https://datarhei.github.io/restreamer/) - Restreamer allows you to do h.264 real-time video streaming on your website without a streaming provider. ([Source Code](https://github.com/datarhei/restreamer)) `Apache` `Nodejs`
   * [Rygel](https://wiki.gnome.org/action/show/Projects/Rygel) - Rygel is a home media solution (UPnP AV MediaServer) that allows you to easily share audio, video and pictures to other devices. Additionally, media player software may use Rygel to become a MediaRenderer that may be controlled remotely by a UPnP or DLNA Controller. `GPLv3` `C`