Added a POCO handler and IWindsorInstaller usage sample documentation.

I have added the POCO handler sample used with windsor container, like I
promised many months ago to Dru after learning the proper way of doing
this in Mass transit mailing list. (Referring: https://groups.google.com/forum/#!msg/masstransit-discuss/gPYDzM7gX3A/wWd1nBJj90IJ)