Add remote trailer to xml

MediaBrowser.Providers/Savers/XmlSaverHelpers.cs

@@ -70,7 +70,8 @@ namespace MediaBrowser.Providers.Savers
                     "Studios",
                     "Tags",
                     "Added",
-                    "LockData"
+                    "LockData",
+                    "Trailer"
                 });
 
                 var position = xml.ToString().LastIndexOf("</", StringComparison.OrdinalIgnoreCase);
@@ -199,6 +200,11 @@ namespace MediaBrowser.Providers.Savers
                 builder.Append("<PremiereDate>" + SecurityElement.Escape(item.PremiereDate.Value.ToString("yyyy-MM-dd")) + "</PremiereDate>");
             }
 
+            if (item.RemoteTrailers.Count > 0)
+            {
+                builder.Append("<Trailer>" + SecurityElement.Escape(item.RemoteTrailers[0].Url) + "</Trailer>");
+            }
+
             if (item.Budget.HasValue)
             {
                 builder.Append("<Budget>" + SecurityElement.Escape(item.Budget.Value.ToString(UsCulture)) + "</Budget>");