title: How do I add text to an empty element in Hpricot?
body: <p>If I have an empty tag:</p>
  
  <pre><code>&lt;tag/&gt;
  </code></pre>
  
  <p>How can I add text so that I end up with:</p>
  
  <pre><code>&lt;tag&gt;Hello World!&lt;/tag&gt;
  </code></pre>
  
  <p>I can only seem to swap the whole tag with different content or add content before/after it. </p>