Tweaking cards one last time. (#39)

Signed-off-by: Mary Anthony <mary@blockstack.com>

_config.yml

@@ -62,6 +62,7 @@ twitter:
   image: /assets/img/touch-icon.png
   card: summary
 
+
 # Default footer image settings
 footer:
     copyright:      "Blockstack Public Benefits Corp."
@@ -151,6 +152,7 @@ defaults:
     values:
       comments: true
       image: /assets/img/touch-icon.png
+      description: "Using the Blockstack Ecosystem to develop decentralizied applications (DApps). "
 
 collections:
   android:

_includes/head.html

@@ -3,10 +3,10 @@
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>{{ page.title | escape }}</title>
-  <meta name="twitter:image" content="{{ site.url }}/assets/img/touch-icon.png">
   {% seo title=false %}
+  {% seo description=false %}
   <!-- <meta property="og:image" content="{% if site.brand.image contains 'http' %}{{ site.brand.image }}{% else %}{{ site.post_assets | url }}{{ site.brand.image }}{% endif %}"/> -->
-  <meta property="og:image" content="{{ "/assets/img/touch-icon.png" | relative_url }}"/>
+  <meta property="og:image" content="{{site.url}}{{ page.image }}"/>
   <link rel="stylesheet" href="{{ "/assets/css/main.css" | relative_url }}">
   <link rel="shortcut icon" type="image/png" href="{{ "assets/img/touch-icon.png" | relative_url }}" >
   <link rel="alternate" type="application/rss+xml" title="{{ site.title | escape }}" href="{{ "/feed.xml" | relative_url }}">