title: How to get input value from <p-calendar> in primeNG?
body: <p>I have situation, when have to show selected value from input p-calendar. <br/>
  How to get this value from inputs and show underneath in the same format? <br/>
  I will add that it is impossible here to use angular2 date pipe, because I have array of dates not a single value.</p>
  
  <p>My code: <a href="https://plnkr.co/edit/md3rRokf7FynTD5fz2gz?p=preview" rel="nofollow noreferrer">https://plnkr.co/edit/md3rRokf7FynTD5fz2gz?p=preview</a></p>
  
  <pre><code>&lt;h3&gt;Angular 4.2.6, PrimeNG 4.1.3, Calendar example&lt;/h3&gt;
  &lt;div class="box-body"&gt;
      &lt;div class="row"&gt;
          &lt;div class="col-md-12"&gt;
              &lt;p-calendar maxDateCount="2" placeholder="Choose days" [(ngModel)]="dates" selectionMode="multiple" readonlyInput="true"&gt;&lt;/p-calendar&gt;
          &lt;/div&gt;
          &lt;div class="col-md-12"&gt;
              &lt;p-calendar placeholder="Choose range of date" [(ngModel)]="rangeDates" selectionMode="range" readonlyInput="true"&gt;&lt;/p-calendar&gt;
          &lt;/div&gt;
      &lt;/div&gt;
      &lt;div class="row"&gt;
          &lt;div class="col-md-12"&gt;
              Your days:
          &lt;/div&gt;
          &lt;div class="col-md-12"&gt;
              Your range of date:
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>