Added convenience methods for to/from xml and json
diff --git a/src/ProtocolBuffers/Serialization/XmlFormatWriter.cs b/src/ProtocolBuffers/Serialization/XmlFormatWriter.cs
index 2bb4f15..1be2f39 100644
--- a/src/ProtocolBuffers/Serialization/XmlFormatWriter.cs
+++ b/src/ProtocolBuffers/Serialization/XmlFormatWriter.cs
@@ -20,7 +20,13 @@
 

         static XmlWriterSettings DefaultSettings(Encoding encoding)

         {

-            return new XmlWriterSettings() { CheckCharacters = false, NewLineHandling = NewLineHandling.Entitize, Encoding = encoding };

+            return new XmlWriterSettings() 

+            { 

+                CheckCharacters = false, 

+                NewLineHandling = NewLineHandling.Entitize, 

+                OmitXmlDeclaration = true,

+                Encoding = encoding, 

+            };

         }

 

         /// <summary>