footer.html

<footer class="site-footer">
  <hr>

  <div class="container">

    {% if site.social %}
    <ul class="footer-social">
      <li>We are on</li>

      {% if site.social.facebook %}
      <li>
        <a href="https://facebook.com/{{ site.social.facebook }}">
          <i class="fa fa-facebook"></i> Facebook
        </a>
      </li>
      {% endif %}

      {% if site.social.facebook_group %}
      <li>
        <a href="https://facebook.com/groups/{{ site.social.facebook_group }}">
          <i class="fa fa-facebook"></i> Facebook Group
        </a>
      </li>
      {% endif %}

      {% if site.social.twitter %}
      <li>
        <a href="https://twitter.com/{{ site.social.twitter }}">
          <i class="fa fa-twitter"></i> Twitter
        </a>
      </li>
      {% endif %}

      {% if site.social.googleplus %}
      <li>
        <a href="https://plus.google.com/+{{ site.social.googleplus }}">
          <i class="fa fa-google-plus"></i> Google+
        </a>
      </li>
      {% endif %}

      {% if site.social.youtube %}
      <li>
        <a href="https://youtube.com/c/{{ site.social.youtube }}">
          <i class="fa fa-youtube"></i> YouTube
        </a>
      </li>
      {% endif %}

      {% if site.social.github %}
      <li>
        <a href="https://github.com/{{ site.social.github }}">
          <i class="fa fa-github"></i> Github
        </a>
      </li>
      {% endif %}
      
      {% if site.social.skype %}
      <li>
        <a href="https://join.skype.com/{{ site.social.skype }}">
          <i class="fa fa-skype"></i> Skype Group
        </a>
      </li>
      {% endif %}

    </ul>
    {% endif %}

    {% if site.hashtag %}
    <div class="footer-social">
      Talk about <tt>#{{ site.hashtag }}</tt> on

      <a href="https://facebook.com/hashtag/{{ site.hashtag }}">
        <i class="fa fa-facebook"></i>
      </a>

      <a href="https://twitter.com/hashtag/{{ site.hashtag }}">
        <i class="fa fa-twitter"></i>
      </a>

      <a href="https://vine.co/tags/{{ site.hashtag }}">
        <i class="fa fa-vine"></i>
      </a>
    </div>
    {% endif %}

  </div>
</footer>