title: Angular2: property binding not work with A-Frame entity
body: <p>I'm using Angular2 and <a href="https://aframe.io/" rel="nofollow noreferrer">A-Frame</a> to design a web application which displays virtual scene. But it seems data binding feature of Angular does not work with a-frame entity</p>
  
  <p>I bind image url to [src] attribute of  entity as the following:</p>
  
  <p>====>>> sim.component.html</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;a-scene&gt;
      &lt;a-entity camera look-controls position="10 0 8" rotation="0 20 0"&gt;
      &lt;/a-entity&gt;
  
      &lt;a-plane *ngFor="let item of layers; let i = index" width="10" height="6"
          src={{imageURL}} position="0 0 {{-3*i + 3}}"&gt;
      &lt;/a-plane&gt;
  &lt;/a-scene&gt;
  </code></pre>
  
  <p>====>>> sim.component.ts</p>
  
  <pre class="lang-typescript prettyprint-override"><code>    @Component({
          templateUrl: './sim.component.html',
          selector: 'sim-tag',
          providers: [SimService]
      })
      export class SimComponent implements OnInit {
  
          imageURL: string;
          layers: Object[];
  
          constructor(private service: SimService, private config: Configuration){}
  
          ngOnInit() {
              this.layers = [1, 2, 3, 4, 5, 6];
              this.imageURL = "http://localhost/images/test.jpg";     
          }
      }
  </code></pre>
  
  <p>When run application, I think it should generate an <strong>a-plane</strong> entity like</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;a-plane height="6" width="10"
      ng-reflect-src="http://localhost/images/test.jpg" src="http://localhost/images/test.jpg"
      ng-reflect-position="0 0 0" position="0 0 0" &gt;
  &lt;/a-plane&gt;
  </code></pre>
  
  <p>but actually it is</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;a-plane height="6" width="10" 
      ng-reflect-src="http://localhost/images/test.jpg" 
      ng-reflect-position="0 0 0"  position=""&gt;
  &lt;/a-plane&gt;
  </code></pre>
  
  <p>there is no "src" and "position" attribute, hence, plane image display nothing.</p>
  
  <p>I made a demo here: <a href="https://plnkr.co/edit/t6YhZy5gCzgycaYVeGrt?p=preview" rel="nofollow noreferrer">https://plnkr.co/edit/t6YhZy5gCzgycaYVeGrt?p=preview</a></p>
  
  <p>Please help.
  Thanks.</p>