diff --git a/README.md b/README.md
index 1ab82b8..2db9776 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,5 @@
 NetDataContractSerializer .Net Core port from the Microsoft .NET Reference Source 
 
 https://github.com/microsoft/referencesource
+
+This is almost complete port of .Net Framework System.Runtime.Serialization library