async: small update to copyright year to test auto-generation of readme

modules/async/doc/async.xml

@@ -25,7 +25,7 @@
 	    </editor>
 	</authorgroup>
 	<copyright>
-	    <year>2011</year>
+	    <year>2011-2016</year>
 	    <holder>asipto.com</holder>
 	</copyright>
     </bookinfo>