Fix example code.

Closes #227
Another doc fix.
composite primary key support for view/edit/delete

Add support for composite primary keys (new in cakephp 3.0).
When the action is called with an incorrect number of primary keys a
'invalidId' message is send, followed by throwing its exception.
config option for query contain associations

Add support for setting the list of associations that should be eagerly loaded
along with the query.  This is a per action config option.
config item for passing options to patchEntity