title: Delete node from Firebase using React and firereact
body: <p>I'm pretty puzzled by the way reactfire works, as there doesn't seem to much about it documentation-wise.</p>
  
  <p>So I want to delete and update some child nodes, but I have no idea how to do it. All tutorials focus solely in retrieving data, which are treated as a regular array and I don't even seem to get access to their keys.</p>
  
  <p>Here's the official example: <a href="https://www.firebase.com/blog/2014-05-01-using-firebase-with-react.html" rel="nofollow">https://www.firebase.com/blog/2014-05-01-using-firebase-with-react.html</a></p>
  
  <p>How do perform these operations using React?</p>
  
  <p>Once you instantiate FB:</p>
  
  <pre><code>```
  this.fb = new Firebase('https://react-testing.firebaseio.com/items');
  this.bindAsArray(this.fb, 'items');
  ```
  </code></pre>
  
  <p>'items' becomes bound to this.state.items. Cool, now I have the data.</p>
  
  <p>But how do I manipulate it? What's the correct way of getting a reference to the item being passed?</p>