title: Polymer click event is not fired
body: <p>At the moment I'm trying my first steps with Polymer. Now I have a simple page with a paper-button on it but I can't register a click event for it. I tried with this code:</p>
  
  <pre><code>&lt;paper-button raisedButton 
                id="test"
                class="colored" 
                label="Click"
                link="http://twitter.com"
                on-click="{{ goLink }}"&gt;
  &lt;/paper-button&gt;
  
  &lt;script&gt;
          Polymer('#test', {
              goLink: function(e) 
              {
                  window.location.href = e.target.getAttribute('link');
              }
         });
  &lt;/script&gt;
  </code></pre>
  
  <p>The click event is not fired. What is wrong with the code? And second question: Should I use <code>on-click</code> or <code>on-tab</code> in my code?</p>