title: Android actionbar sherlok doesn't show divider
body: <p>I'm using the sherlok-actionbar and trying to apply a divider between the action buttons.
  I have th style but the dividers are not visible, why?</p>
  
  <pre><code>&lt;style name="Theme.SherlockCustom" parent="@style/Theme.Sherlock.Light"&gt;
      &lt;item name="abBackground"&gt;@drawable/actionbar_gradient&lt;/item&gt;
      &lt;item name="abIcon"&gt;@drawable/logo&lt;/item&gt;       
      &lt;item name="abDivider"&gt;@drawable/ab_divider&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p>Thanks!</p>