title: how to get ng-template to work in ionic 2 project
body: <p>I had previously attempted to use virtual scroll for an array of cards that will have a varying amount of items. Virtual scroll wouldn't work with my cards and it was suggested I try <code>ng-template</code> which kept giving me an error in the terminal that said this : </p>
  
  <blockquote>
    <p>Error: Template parse errors:  [01:38:47]  'ng-template' is not a
    known element:  [01:38:47]  1. If 'ng-template' is an Angular
    component, then verify that it is part of this module.  [01:38:47]  2.
    If 'ng-template' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA"
    to the '@NgModule.schemas' of this</p>
  </blockquote>
  
  <p>The other solutions I've tried to get virtual scroll to work have left me with a blank, white, unrendered page, which is strange because you'd think if there was an error the terminal would have told me and the build would fail. I want to try to figure out how to make <code>ng-template</code> work for me. Googling hasn't turned up sufficient examples.
  This is how I was originally using <code>virtualScroll</code>, which is the wrong way to do it. I've tried swapping in div and list elements to put the <code>virtualScroll</code> property on and I get the same result of a blank page. </p>
  
  <p><strong>HTML</strong></p>
  
  <pre><code>&lt;ion-content id="content"&gt;
     &lt;ion-card id="card" *ngFor="let event of listOfEvents 
       [virtualScroll]="listOfEvents"&gt;          
       &lt;ion-item *virtualItem="let event"&gt; 
         &lt;ion-row&gt;
           &lt;ion-col&gt;
             &lt;span class="showDetails"&gt;Guests Needed:&lt;/span&gt; {{event.guests}}
           &lt;/ion-col&gt;
           &lt;ion-col&gt;
             &lt;span class="showDetails"&gt;Cover:&lt;/span&gt; {{event.coverCharge}}
           &lt;/ion-col&gt;
           &lt;ion-col&gt;
             &lt;span class="showDetails"&gt;Drink Min:&lt;/span&gt;{{event.drinkMin}
           &lt;/ion-col&gt;   
         &lt;/ion-row&gt; 
      &lt;/ion-item&gt;
    &lt;/ion-card&gt;   
  &lt;/ion-content&gt;
  </code></pre>