add github ribbon
diff --git a/src/site/site.xml b/src/site/site.xml
index f847a3a..2731a77 100644
--- a/src/site/site.xml
+++ b/src/site/site.xml
@@ -47,6 +47,11 @@
         <projectId>6670</projectId>
         <widget>stats</widget>
       </ohloh>
+      <gitHub>
+        <projectId>apache/archiva</projectId>
+        <ribbonOrientation>right</ribbonOrientation>
+        <ribbonColor>black</ribbonColor>
+      </gitHub>
     </fluidoSkin>
 
   </custom>