Updated README with Subsonic support

Author: davidvedvick

README.md

@@ -2,13 +2,15 @@
 
 ![project blue](./design/project-blue-logo-circular.png)
 
-### An alternative, open source streaming music client for [JRiver Media Center](http://jriver.com/).
+### An alternative, open source streaming music client
 
 project blue is a streaming audio client for JRiver Media Center (http://jriver.com/). Stream your favorite music and audio from your JRiver Media Center wherever you are!
 
 Its features include:
 
 * Reliable streaming from your home server running JRiver Media Center via an intuitive layout.
+  * [JRiver Media Center](http://jriver.com/)
+  * Subsonic (alpha - tested with [Navidrome](https://www.navidrome.org/) only)
 * Caching of audio files during playback.
 * Synchronize audio from JRMC server to device.
 * Play local files when present and metadata match.