Bug 570530 - Add origin in DCO

Signed-off-by: Yi Liu <yi.liu@eclipse-foundation.org>
Change-Id: I86165d08798ec9f820d4d6fae41c9e7d61846d56
diff --git a/DCO.html b/DCO.html
index 0eaf283..5e4eb0b 100644
--- a/DCO.html
+++ b/DCO.html
@@ -9,6 +9,8 @@
 </head>
 
 <body>
+<h1>Developer Certificate of Origin</h1>
+<p>This Developer Certificate of Origin (DCO) is a copy of version 1.1 of the DCO which originated from <a href="https://developercertificate.org/">https://developercertificate.org/</a>.</p>
 <pre>Developer Certificate of Origin
 Version 1.1