fix portable and 3.5 project references

MediaBrowser.Model/LiveTv/RecordingGroupQuery.cs

@@ -0,0 +1,11 @@
+namespace MediaBrowser.Model.LiveTv
+{
+    public class RecordingGroupQuery
+    {
+        /// <summary>
+        /// Gets or sets the user identifier.
+        /// </summary>
+        /// <value>The user identifier.</value>
+        public string UserId { get; set; }
+    }
+}