Make the example server code clearer; add the corresponding example client. [Bugfix candidate]

Doc/lib/libsimplexmlrpc.tex

@@ -88,18 +88,49 @@ simple, stand alone XML-RPC servers.
 Example:
 
 \begin{verbatim}
-class MyFuncs:
+from SimpleXMLRPCServer import SimpleXMLRPCServer
-    def div(self, x, y) : return x // y
-
 
+# Create server
 server = SimpleXMLRPCServer(("localhost", 8000))
-server.register_function(pow)
-server.register_function(lambda x,y: x+y, 'add')
 server.register_introspection_functions()
+
+# Register pow() function; this will use the value of 
+# pow.__name__ as the name, which is just 'pow'.
+server.register_function(pow)
+
+# Register a function under a different name
+def adder_function(x,y):
+    return x + y
+server.register_function(adder_function, 'add')
+
+# Register an instance; all the methods of the instance are 
+# published as XML-RPC methods (in this case, just 'div').
+class MyFuncs:
+    def div(self, x, y): 
+        return x // y
+    
 server.register_instance(MyFuncs())
+
+# Run the server's main loop
 server.serve_forever()
 \end{verbatim}
 
+The following client code will call the methods made available by 
+the preceding server:
+
+\begin{verbatim}
+import xmlrpclib
+
+s = xmlrpclib.Server('http://localhost:8000')
+print s.pow(2,3)  # Returns 2**3 = 8
+print s.add(2,3)  # Returns 5
+print s.div(5,2)  # Returns 5//2 = 2
+
+# Print list of available methods
+print s.system.listMethods()
+\end{verbatim}
+
+
 \subsection{CGIXMLRPCRequestHandler}
 
 The \class{CGIXMLRPCRequestHandler} class can be used to