title: add more than one templateUrl in One component in angular2
body: <p>angular2 allows to write muliple-line html code using back-ticks(`).<br>
   but when using templateUrl, i dont know how adding more than one html file.</p>
  
  <p>when i try this..</p>
  
  <pre><code>@Component({
    selector: 'my-app',
    template: `
             &lt;h1&gt;view1&lt;/h1&gt;
             &lt;h1&gt;view2&lt;/h2&gt;
              `
  })
  
  class Appcomponent{
  
  }
  </code></pre>
  
  <p>like that.</p>
  
  <pre><code>@Component({
    selector: 'my-app',
    templateUrl: './HTML1.html','./HTML2.html'
  
  
  })
  
  class Appcomponent{
  
  }
  </code></pre>
  
  <p>together with HTML1.html and HTML2.html</p>
  
  <p>HTML1.html</p>
  
  <pre><code>&lt;h1&gt;view1&lt;/h1&gt;
  </code></pre>
  
  <p>HTML2.html</p>
  
  <pre><code>&lt;h1&gt;view2&lt;/h1&gt;
  </code></pre>
  
  <p>can i using multiple templateUrl in angular2?
  thanks for your time to read this :)</p>