title: How to give formControlName to a FormArray object - Angular 2 (ReactiveFormsModule)
body: <p>In my application I made a form using Reactive Forms. In my app their is a button <code>Add new Fields</code> upon clicking this button new fields are added.</p>
  
  <p>I am able to add new fields but I am not able to assign <code>formControlName</code>.</p>
  
  <p>Could any one please show me the right path how can I add <code>formControlName</code> to these dynamically added fields.</p>
  
  <p><a href="https://plnkr.co/edit/gFC9ySSTucOhPqzjjiHB" rel="noreferrer">Here is the Plnkr for this.</a></p>