title: Set default date for datepicker in angular 2 material
body: <p>I'm trying to create datepicker using material.angular.io, but I need to set default date for field. In previose version angular material it was easy. Somebody knows how I can do it now?</p>
  
  <p>my code:</p>
  
  <pre><code>&lt;input mdInput
         name="start_time"
         #start_time="ngModel"
         [mdDatepicker]="startDate"
         [min]="minDate"
         date="true"
         [(ngModel)]="planModel.start_time"
         placeholder="Choose a date"&gt;
  
      &lt;md-datepicker-toggle mdSuffix [for]="startDate"&gt;&lt;/md-datepicker-toggle&gt;
      &lt;md-datepicker [startView]="dateStart" #startDate&gt;&lt;/md-datepicker&gt;
  </code></pre>