title: Directives not working in ionic 3
body: <p>Directive example in ionic 3, method used previously are not working.
  Already tried the way in which directives where implemented in ionic 2.</p>
  
  <pre><code>import {Directive} from 'angular2/core';
  
  @Directive({
     selector: 'test',
     template: './test.html'
  )}
  export class MyDirective { }
  
  import {MyDirective } from './test'
  
  @Page({
     templateUrl: '../page.html',
     directives: [MyDirective ],
  })
  </code></pre>