title: Can't bind to 'ngModel' since it isn't a known property of 'input'
body: <p>I have this simple input in my component which uses <code>[(ngModel)]</code> :</p>
  <pre class="lang-html prettyprint-override"><code>&lt;input type=&quot;text&quot; [(ngModel)]=&quot;test&quot; placeholder=&quot;foo&quot; /&gt;
  </code></pre>
  <p>And I get the following error when I launch my app, even if the component is not displayed.</p>
  <blockquote>
  <p>zone.js:461 Unhandled Promise rejection: Template parse errors:
  Can't bind to 'ngModel' since it isn't a known property of 'input'.</p>
  </blockquote>
  <p>Here is the component.ts:</p>
  <pre><code>import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
  import { Intervention } from '../../model/intervention';
  
  @Component({
     selector: 'intervention-details',
     templateUrl: 'app/intervention/details/intervention.details.html',
     styleUrls: ['app/intervention/details/intervention.details.css']
  })
      
  export class InterventionDetails
  {
     @Input() intervention: Intervention;
      
     public test : string = &quot;toto&quot;;
  }
  </code></pre>