make sure homepage shows site description

Author: elichad

docs/_includes/head.html

@@ -19,7 +19,7 @@
   {%- assign subtitle = page.type | replace: "_", " " %}
   {%- endif %}
   {%- capture title %}{% if page.url == "/" %}{{site.title}}{% elsif page.title %}{% if subtitle %}{{subtitle}}: {% endif %}{{ page.title }} | {{ site.title }}{%- else %}{{ site.title }}{% endif %}{% endcapture %}
-  {%- capture description %}{% if page.url == "/" %}{{site.description}}{% elsif page.description %}{{ page.description | strip_html | replace: '\n', ' ' | truncatewords: 30, '...' }}{% elsif page.summary %}{{ page.summary | strip_html | replace: '\n', ' ' | truncatewords: 30, '...' }}{% elsif page.excerpt %}{{ page.excerpt | strip_html | replace: '\n', ' ' | truncatewords: 30, '...' }}{% else %}{{ page.content | strip_html | replace: '\n', ' ' | truncatewords: 30, '...' }}{% endif %}{% endcapture %}  
+  {%- capture description %}{% if page.url == "/" or page.url == "/index" %}{{site.description}}{% elsif page.description %}{{ page.description | strip_html | replace: '\n', ' ' | truncatewords: 30, '...' }}{% elsif page.summary %}{{ page.summary | strip_html | replace: '\n', ' ' | truncatewords: 30, '...' }}{% elsif page.excerpt %}{{ page.excerpt | strip_html | replace: '\n', ' ' | truncatewords: 30, '...' }}{% else %}{{ page.content | strip_html | replace: '\n', ' ' | truncatewords: 30, '...' }}{% endif %}{% endcapture %}  
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <title>{{title}}</title>