Tutorial is missing a step?

Hi,

I notice this tutorial page
http://tapestry.apache.org/using-tapestry-with-hibernate.html did not tell
user to add <mapping class="com.example.tutorial.entities.Address">
to the hibernate.cfg.xml file, and thus will result in error at runtime.

Also it would be worth to mention the steps to users on how to configure
"tapestry.hmac-passphrase" so they can avoid the runtime error.

Zemian