added generic remote control commands

MediaBrowser.Controller/Dlna/DeviceProfile.cs

@@ -3,7 +3,6 @@ using MediaBrowser.Model.Entities;
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Runtime.Serialization;
 using System.Xml.Serialization;
 
 namespace MediaBrowser.Controller.Dlna

MediaBrowser.Controller/Dlna/TranscodingProfile.cs

@@ -18,6 +18,9 @@ namespace MediaBrowser.Controller.Dlna
         [XmlAttribute("audioCodec")]
         public string AudioCodec { get; set; }
 
+        [XmlAttribute("protocol")]
+        public string Protocol { get; set; }
+        
         [XmlAttribute("estimateContentLength")]
         public bool EstimateContentLength { get; set; }