title: ember: bound attributes are evaluated on the wrong tag
body: <p>I want to highlight a selected navigation element and so I have bound an attribute to the li of a navigation bar like this: </p>
  
  <pre><code>&lt;li {{bindAttr class="isHome:active"}}&gt;{{#linkTo 'home'}}Home{{/linkTo}}&lt;/li&gt;
  </code></pre>
  
  <p>The attribute is evaluated correctly and adds the right class - but not to the li, instead it gets added to the a which results in: </p>
  
  <pre><code>&lt;li class="" data-bindattr-1="1"&gt;&lt;a id="ember237" class="ember-view active" href="#/home"&gt;Home&lt;/a&gt;&lt;/li&gt; 
  </code></pre>
  
  <p>Is there something wrong here with the markup or is this a bug?!</p>