title: Ionic 2 ion-Searchbar ionClear not firing on button click
body: <p>I have a searchbar in my toolbar as follows:</p>
  
  <pre><code>  &lt;ion-toolbar color="clarity"&gt;
      &lt;ion-searchbar
        [(ngModel)]="searchText"
        [showCancelButton]="false"
        (ionInput)="onInput($event)"
        (ionClear)="onClear($event)"&gt;
      &lt;/ion-searchbar&gt;
    &lt;/ion-toolbar&gt;   
  </code></pre>
  
  <p>and a function in the corresponding TS file: </p>
  
  <pre><code>   onClear(event){
       this.searchText = "";
     }
  </code></pre>
  
  <p>But the 'onClear' event never gets hit when the searchbars little 'x' is clicked.. why is that?</p>