Social Meta tags with Jekyll

sample-social-meta.html

{% unless page.layout == 'error' %}
  {% if page.layout == 'article' %}<meta name="description" content="{{ page.content | strip_html | xml_escape | truncate: 200 }}">{% endif %}
  <meta property="og:title" content="{{ page.title }}"
  />
  {% if page.layout == 'article' %}<meta property="og:description" content="{{ page.content | strip_html | xml_escape | truncate: 200 }}"
  />{% endif %}
  <meta property="og:url" content="{{ site.blogURL }}{{ page.url }}" />
  <meta property="og:image" content="{{ site.og_image }}"
  />
  <meta property="og:site_name" content="{{ site.name }}"
  />
  <meta property="fb:admins" content="{{ site.fb_admins }}" />

  <meta name="twitter:card" content="summary">
  <meta name="twitter:site" content="@boltdotco">
  {% if page.author %}
    {% assign author = site.data.authors[page.author] %}
    <meta name="twitter:creator" content="{{ author.twitter }}">
    {% if page.date %}
      <meta content="{{ page.date | date_to_xmlschema }}" property="article:published_time">
      <meta content="{{ author.url }}" property="article:author">
    {% endif %}
    {% else %}
      <meta property="og:type" content="website" />
  {% endif %}

  {% if page.title %}<meta name="twitter:title" content="{{ page.title }}">{% else %}<meta name="twitter:title" content="{{ site.title }}">{% endif %}
  {% if page.url %}<meta name="twitter:url" content="{{ site.blogURL }}{{ page.url }}">{% endif %}
  {% if page.layout == 'article' %}<meta name="twitter:description" content="{{ page.content | strip_html | xml_escape | truncate: 200 }}">{% endif %}
  <meta name="twitter:image:src" content="{{ site.og_image }}">
{% endunless %}
  <meta content='yes' name='apple-mobile-web-app-capable'>
  <meta content='black' name='apple-mobile-web-app-status-bar-style'>
  <meta content='Bolt Blog' name='apple-mobile-web-app-title'>

With no layout support?