Documentation updates

src/examples/client.py

 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 
+""" This is an example client which shows how to call the pyptlib.easy high-level API. """
+
 from pyptlib.easy.client import init, reportSucess, reportFailure, \
     reportEnd
 

src/pyptlib/easy/client.py

 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 
+""" The pyptlib.easy.client module includes a convenient API for writing pluggable transport clients. """
+
 from pyptlib.config import EnvException
 from pyptlib.client import ClientConfig
 

src/pyptlib/easy/server.py

 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 
+""" The pyptlib.easy.server module includes a convenient API for writing pluggable transport servers. """
+
 from pyptlib.config import EnvException
 from pyptlib.server import ServerConfig