--- a/viewer.py	Thu Jul 28 00:41:39 2016 +0800
+++ b/viewer.py	Mon Aug 01 10:53:12 2016 +0800
@@ -321,7 +321,7 @@
 
     def listen(self, port, address='', **kwargs):
         name = self.__class__.__name__
-        logging.info('%s is serving on %s:%d', name, address, port)
+        logging.info('%s is serving on http://%s:%d/', name, address, port)
         super(Viewer, self).listen(port, address, **kwargs)