add og image and description for social sharing

Author: Steve Krouse

_config.yml

@@ -19,4 +19,15 @@ kramdown:
 future: true
 jailed: false
 theme: jekyll-theme-primer
-gfm_quirks: paragraph_end
+gfm_quirks: paragraph_end
+title: Future of Coding
+description: Are you looking for the real computer revolution? Join the club! Future of Coding is a community, podcast, and research project organized by Steve Krouse.
+twitter:
+  username: stevekrouse
+  card: summary
+logo: https://user-images.githubusercontent.com/2288939/57971688-1b7a6f80-7989-11e9-8866-330f00db1db9.jpg
+defaults:
+  - scope:
+      path: ""
+    values:
+      image: https://user-images.githubusercontent.com/2288939/57971688-1b7a6f80-7989-11e9-8866-330f00db1db9.jpg