The business of the ACL class is just to hold Designators and Roles, and not parsing the different ways a designator is expressed through the API. The [Eaco::ACL#identify](http://www.rubydoc.info/github/ifad/eaco/Eaco/ACL#identify-instance_method) method should be moved to [Resource](http://www.rubydoc.info/github/ifad/eaco/Eaco/Resource). Thoughts?