title: angular2 - FormArray with Checkboxes
body: <p>I have a dynamic size of items. For every item I want to generate a checkbox. 
  I thought the best approach for that is to use the FormArray.</p>
  
  <p>But I cannot set any additional property to specifiy the label for the dynamic checkboxes.</p>
  
  <pre><code>items: Array&lt;string&gt; = ['Banana', 'Apple', 'Beer', 'Water'];
  
  let checkboxArray = new FormArray([]);
  
  this.items.forEach(item =&gt; {
    let formControl = new FormControl(true);
    checkboxArray.push(formControl);
  })
  </code></pre>
  
  <p>But as we see here, i can only specifiy the value for the checkbox in the formControl, but cannot set any additional info about the label.</p>
  
  <p>A working plunkr is here: <a href="http://plnkr.co/edit/ODe5QSOEvQsQiuBzs56o?p=preview" rel="noreferrer">http://plnkr.co/edit/ODe5QSOEvQsQiuBzs56o?p=preview</a></p>