title: firebase-query in dom-repeat to populate a grid
body: <p>I am trying to loop through an array of keys that I would like firebase-query to fetch the nodes that meet the <code>equal-to</code> condition for those keys. When it comes to Polymer, HTMl, and JavaScript, I can't figure it out.  </p>
  
  <p>Any help will be appreciated, below is what I have. Thanks.</p>
  
  <pre><code>   &lt;template is="dom-repeat" items="[[results]]"&gt;
      &lt;firebase-query
        id="imgQ"
        app-name="ProjectName"
        path="/images"
        order-by-child="childKeyToOrderBy"
        equal-to=[[item.key]]    
        data="{{images}}"&gt;
      &lt;/firebase-query&gt;
      &lt;/template&gt;
  
  
      &lt;div id="listContainer"&gt;      
      &lt;template items=[[images]] is="dom-repeat"&gt;    
        &lt;div class="item"&gt;
          &lt;iron-image class="imgGrd" sizing="cover" src="[[item.image]]"&gt;&lt;/iron-image&gt;
        &lt;/div&gt;    
      &lt;/template&gt;
      &lt;/div&gt;  
  </code></pre>