Merge pull request #1 from chrisjohnson/master

Set up Tags plugin to support Search.Searchable behavior with typeahead
Strict adherance on afterSave() and afterFind()

Declaration of TaggableBehavior::afterSave() should be compatible with ModelBehavior::afterSave(Model $model, $created, $options = Array) [APP/Plugin/Tags/Model/Behavior/TaggableBehavior.php, line 19]
Merge remote-tracking branch 'upstream/master'