title: Bind two inputs so they display the same text even if one of them was changed by user
body: <p>The jQuery code looks like this and works fine (probably it look a bit sorter, so please let me know and I'll change it either): <a href="http://jsfiddle.net/69UAT/" rel="nofollow">jsFiddle</a></p>
  
  <p>jQuery:</p>
  
  <pre><code>$('.inputs').on('keyup',function(){
      $(this).parent().not(this).find('.inputs').val($(this).val());
  }
  );
  </code></pre>
  
  <p>HTML:</p>
  
  <pre><code>&lt;div&gt;
      &lt;input type="text" class="inputs" value="hello"&gt;
      &lt;input type="text" class="inputs" value="John"&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>How can I rewrite this code for knockout.js?</p>
  
  <p>Thank you.</p>