title: how to write some variable(name and value) in dust template using helper
body: <p><BR></p>
  
  <p>I have client side dust template and a corresponding helper.</p>
  
  <p>Helper : <BR></p>
  
  <pre><code>function(chunk, context, bodies, params) {
  };
  </code></pre>
  
  <p>Now I want to write some key value pair(from helper) which I can read in dust template.<BR>
  e.g.If i write (k,v) in helper, in dust template</p>
  
  <pre><code>{k}
  </code></pre>
  
  <p>should output 'v'</p>
  
  <p>Thanks,<BR>
  Shantanu</p>