fix portable and 3.5 project references

MediaBrowser.Model/Dlna/HttpHeaderInfo.cs

@@ -0,0 +1,16 @@
+using System.Xml.Serialization;
+
+namespace MediaBrowser.Model.Dlna
+{
+    public class HttpHeaderInfo
+    {
+        [XmlAttribute("name")]
+        public string Name { get; set; }
+
+        [XmlAttribute("value")]
+        public string Value { get; set; }
+
+        [XmlAttribute("match")]
+        public HeaderMatchType Match { get; set; }
+    }
+}