ecarlisle/jekyll-header-with-social-meta.html

## jekyll-header-with-social-meta.html
{% assign full_url = site.baseurl | prepend: site.url %}

{% capture page_title %}
  {% if page.title %}
    {{ page.title }}
  {% else %}
    {{ site.title }}
  {% endif %}
{% endcapture %}
{% assign page_title = page_title | strip_newlines | split " " | join " " %}

{% capture page_type %}
  {% if page.type %}
    {{ page.type }}
  {% else %}
    article
  {% endif %}
{% endcapture %}
{% assign page_title = page_title | strip_newlines | split " " | join " " %}

{% capture page_url %}{{ page.url | replace:'index.html','' | prepend: full_url }}{% endcapture %}

{% capture page_image %}
  {% if page.image %}
    {{ page.image | prepend: full_url }}
  {% else %}
    {{ site.image | prepend: full_url }}
  {% endif %}
{% endcapture %}
{% assign page_image = page_image | strip_newlines | split " " | join " " %}


{% capture page_description %}
  {% if page.description %}
    {{ page.description }}
  {% else if page.excerpt %}
    {{ page.excerpt}}
  {% else %}
    {{ site.description }}
  {% endif %}
{% endcapture %}{% assign page_description = page_description | strip_newlines | split " " | join " " | truncate: 160 %}

{% assign apple_icon_sizes = "57,72,76,114,120,144,152,180" | split: "," %}

<head>

  <!-- General Metadata -->
  <title>{{ page_title }}</title>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <meta name="description" content="{{ page_description }}">
  <meta name="robots" content="index, follow">
  <link rel="canonical" href="{{page_url}}">
  <link rel="alternate" type="application/rss+xml" title="{{ site.title }}" href="{{ full_url }}/feed.xml">

  <!-- Social Meta Madness -->
  <meta name="twitter:card" content="summary">
  <meta name="twitter:site" content="{{site.twitter_username}}">
  <meta name="twitter:url" property="og:url" content="{{page_url}}">
  <meta name="twitter:title" property="og:title" content="{{ page_title }}">
  <meta name="twitter:description" property="og:description" content="{{ page_description }}">
  <meta name="twitter:image" property="og:image" content="{{ page_image }}">
  <meta name="twitter:creator" content="{{site.twitter_username}}" />
  <meta property="article:author" content="https://www.facebook.com/{{ site.facebook_username }}">
  <meta property="article:publisher" content="https://www.facebook.com/{{ site.facebook_username }}">
  <meta property="og:type" content="{{ page_type }}" />
  <meta property="og:site_name" content="{{ site.title }}" />
  <meta property="og:locale" content="en_US" />
  <meta property="fb:app_id" content="{{ site.facebook_app_id }}" />
  <meta property="fb:admins" content="{{ site.facebook_admins }}" />

  <!-- Front-End Resources -->
  <link rel="stylesheet" href="{{site.baseurl}}/assets/css/main.css">
  <link rel="stylesheet" href="{{site.baseurl}}/assets/js/main.js">

  <!-- Icons -->
  <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon" />
  <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
{% for size in apple_icon_sizes %}
  <link rel="apple-touch-icon" sizes="{{ size }}x{{ size }}" href="/apple-touch-icon-{{ size }}x{{ size }}.png" />
{% endfor %}

</head>
<body>