added a further note where to look for available cache implementations and their respective settings
added a further note where to look for available cache implementations and their respective settings


	See: cakephp/cakephp@10350a9fdcd7f25c9d20e772781737f4ab5913c3


QoboLtd/project-template-cakephp,ojengwa/cake-appengine,makallio85/fish-diary,QoboLtd/project-template-cakephp,makallio85/fish-diary,QoboLtd/project-template-cakephp,ojengwa/cake-appengine,makallio85/fish-diary,QoboLtd/project-template-cakephp,QoboLtd/project-template-cakephp