title: Angular 2 select editable
body: <p>I have a simple select like this: </p>
  
  <pre><code>&lt;select [style]="{width : '100%' }" [(ngModel)]="rule.valoreImmesso" class="lm-custom-dropdown"&gt;
        &lt;option *ngFor="let valore of rule.comboValues" [value]="valore.value"&gt;{{valore.label}}&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>I want to add an input text inside the dropdown in order to filter the options. Is it possible? How to do it? </p>