title: How to pop out ion-select using different button
body: <p>How do I pop out the ion-select using different button?</p>
  
  <pre><code>&lt;ion-select [(ngModel)]="choices" multiple="true"&gt;
          &lt;ion-option&gt;Appliances&lt;/ion-option&gt;
          &lt;ion-option&gt;Automobile&lt;/ion-option&gt;
          &lt;ion-option&gt;Cellphones&lt;/ion-option&gt;
          &lt;ion-option&gt;Clothing&lt;/ion-option&gt;
          &lt;ion-option&gt;Computers&lt;/ion-option&gt;
          &lt;ion-option&gt;Electronics&lt;/ion-option&gt;
          &lt;ion-option&gt;Toys&lt;/ion-option&gt;
  &lt;/ion-select&gt;
  </code></pre>