Add docs for events.

Cake/ORM/Table.php

@@ -53,9 +53,19 @@
  * Table objects provide a few callbacks/events you can hook into to augment/replace
  * find operations. Each event uses the standard event subsystem in CakePHP
  *
- * - beforeFind($event, $query, $options) - Fired before each find operation. By stopping
+ * - `beforeFind($event, $query, $options)` - Fired before each find operation. By stopping
  *   the event and supplying a return value you can bypass the find operation entirely. Any
  *   changes done to the $query instance will be retained for the rest of the find.
+ * - `beforeValidate($event, $entity, $options, $validator)` - Fired before an entity is validated.
+ *   By stopping this event, you can abort the validate + save operations.
+ * - `afterValidate($event, $entity, $options, $validator)` - Fired after an entity is validated.
+ * - `beforeSave($event, $entity, $options)` - Fired before each entity is saved. Stopping this
+ *   event will abort the save operation. When the event is stopped the result of the event will
+ *   be returned.
+ * - `afterSave($event, $entity, $options)` - Fired after an entity is saved.
+ * - `beforeDelete($event, $entity, $options)` - Fired before an entity is deleted.
+ *   By stopping this event you will abort the delete operation.
+ * - `afterDelete($event, $entity, $options)` - Fired after an entity has been deleted.
  *
  * @see Cake\Event\EventManager for reference on the events system.
  */