title: Polymer 1.0 default icon set in iron-icons not working using blaze (meteor) templating engine
body: <p>After upgrading to Polymer 1.0, default iron-icons set is not working. I am trying to use home icon from the default icon set.</p>
  
  <p>HTML code fragment:</p>
  
  <pre><code>    &lt;link rel="import" href="/components/iron-flex-layout/classes/iron-flex-layout.html"&gt;
      &lt;link rel="import" href="/components/iron-icons/iron-icons.html"&gt;
      &lt;link rel="import" href="/components/iron-icons/communication-icons.html"&gt;
      &lt;link rel="import" href="/components/iron-form/iron-form.html"&gt;
      &lt;link rel="import" href="/components/iron-selector/iron-selector.html"&gt;
      &lt;link rel="import" href="/components/iron-pages/iron-pages.html"&gt;
  
      &lt;!-- OOTB paper elements --&gt;
      &lt;link rel="import" href="/components/paper-drawer-panel/paper-drawer-panel.html"&gt;
      &lt;link rel="import" href="/components/paper-header-panel/paper-header-panel.html"&gt;
      &lt;link rel="import" href="/components/paper-toolbar/paper-toolbar.html"&gt;
  
      &lt;link rel="import" href="/components/paper-icon-button/paper-icon-button.html"&gt;
      &lt;link rel="import" href="/components/paper-material/paper-material.html"&gt;
  
      &lt;link rel="import" href="/components/paper-menu/paper-menu.html"&gt;
      &lt;link rel="import" href="/components/paper-item/all-imports.html"&gt;
  
      &lt;link rel="import" href="/components/paper-tabs/paper-tab.html"&gt;
      &lt;link rel="import" href="/components/paper-tabs/paper-tabs.html"&gt;
      &lt;link rel="import" href="/components/paper-tabs/paper-tabs-icons.html"&gt;
  
  &lt;paper-icon-item id="socialFeed"&gt;
  
          &lt;iron-icon icon="home" item-icon&gt;&lt;/iron-icon&gt;
  
          &lt;paper-item-body two-line&gt;
            &lt;div&gt;Social Feed&lt;/div&gt;
            &lt;div secondary&gt;2 Unread FB Posts&lt;/div&gt;
          &lt;/paper-item-body&gt;
  
  &lt;/paper-icon-item&gt;
  </code></pre>
  
  <p>I am getting a warning in Chrome debugger:<code>[iron-icon::_updateIcon]: could not find iconset icons, did you import the iconset?</code> @ line#167 in iron-icon.html</p>
  
  <p>Debugging showed that in line 163 in iron-icon.html which is</p>
  
  <pre><code>this._iconset = this.$.meta.byKey(this._iconsetName);
  </code></pre>
  
  <p><code>this._iconsetName</code> has value "icons" but <code>this._iconset</code> is undefined.</p>
  
  <p>Am I missing some import or something here?</p>
  
  <p><strong>EDIT</strong> This issue occurs only while using Blaze template engine in Meteor. Just wanted to add this bit for the complete picture.</p>