{% assign sitenav__list = site.data.sitenav %}
<ul>
  {% for sitenav__item in sitenav__list %}
    <li {% if sitenav__item.url == "/" %}class="index"{% endif %}>
      <a href="{{ site.baseurl }}{{ sitenav__item.page.url | replace:'index.html','' }}">{{ sitenav__item.page.title }}</a>
    </li>
  {% endfor %}
  <li><a href="https://github.com/youtube/spfjs">GitHub</a></li>
</ul>