{% if page.author %}
  {% assign author = site.authors[page.author] %}
{% else %}
  {% assign author = site.author %}
{% endif %}

{% if author.github %}
    <!-- {% avatar {{ author.github }} size=32 %} -->
{% endif %}

{% if author.name %}
    <!-- Written by <span itemprop="author" itemscope itemtype="http://schema.org/Person"><span itemprop="name">{{ author.name }}</span></span><br> -->
{% endif %}

<time datetime="{{ page.date | date_to_xmlschema }}" itemprop="datePublished">
    {% assign date_format = site.date_format | default: "%b %-d, %Y" %}
</time>