title: Catch every update / create in Waterline / sails.js
body: <p>I'm trying to create a « Workflow » table, which register every event on every table, with some extra infos (IP, session id).</p>
  
  <p>I have lots of models, and don't want to write every afterUpdate/afterCreate in every models, which is hard to maintain, plus there is no req in models to store the session id.</p>
  
  <p>I don't really know how to start, that's why I'm asking if Waterline throws any event or something like that when it does any action ?</p>
  
  <p>Thanks in advance !</p>