update sync objects

MediaBrowser.Model/Session/ClientCapabilities.cs

@@ -13,11 +13,13 @@ namespace MediaBrowser.Model.Session
         public string MessageCallbackUrl { get; set; }
 
         public bool SupportsContentUploading { get; set; }
+        public bool SupportsDeviceId { get; set; }
 
         public ClientCapabilities()
         {
             PlayableMediaTypes = new List<string>();
             SupportedCommands = new List<string>();
+            SupportsDeviceId = true;
         }
     }
 }