fixes #712 - multi-version grouping

MediaBrowser.Model/Session/SessionCapabilities.cs

@@ -0,0 +1,15 @@
+
+namespace MediaBrowser.Model.Session
+{
+    public class SessionCapabilities
+    {
+        public string[] PlayableMediaTypes { get; set; }
+
+        public bool SupportsFullscreenToggle { get; set; }
+
+        public SessionCapabilities()
+        {
+            PlayableMediaTypes = new string[] {};
+        }
+    }
+}