Remove expired certificates and add a note about how to generate new ones.  Add some coding declarations where necessary.
diff --git a/examples/simple/client.py b/examples/simple/client.py
index 6358b20..6bae488 100644
--- a/examples/simple/client.py
+++ b/examples/simple/client.py
@@ -1,4 +1,4 @@
-#
+# -*- coding: latin-1 -*-
 # client.py
 #
 # Copyright (C) 2001 Martin Sjögren and AB Strakt, All rights reserved