adding in social

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

THEME_README.md

@@ -68,17 +68,17 @@ authors:
 social:
     email:
     website:
-    facebook:       https://www.facebook.com/
+    facebook:       https://www.facebook.com/blockstack
     flickr:
     dribbble:
-    github:
+    github:         https://github.com/blockstack
     googleplus:
-    instagram:      https://www.instagram.com/
-    linkedin:
+    instagram:
+    linkedin:       https://www.linkedin.com/company/blockstack-labs
     pinterest:
-    twitter:        https://twitter.com/
-    vimeo:          https://vimeo.com/
-    youtube:
+    twitter:        https://twitter.com/blockstack
+    vimeo:
+    youtube:        https://www.youtube.com/channel/UC3J2iHnyt2JtOvtGVf_jpHQ/featured
 
 # Twitter share button
 twitter_username:

_includes/share.html

@@ -1,4 +1,3 @@
 <div class="share uk-text-center">
     <a href="https://twitter.com/intent/tweet?text={{ page.title }}&url={{ site.url }}{{ page.url }}&via={{ site.twitter_username }}&related={{ site.twitter_username }}" rel="nofollow" target="_blank" title="Share on Twitter" onclick="window.open(this.href, 'twitter', 'width=550,height=235');return false;"><span data-uk-icon="icon: twitter; ratio: 1.2"></span></a>
-    <a  class="uk-margin-small-left" href="https://www.facebook.com/sharer/sharer.php?u={{ page.url | prepend: site.url | cgi_escape }}" rel="nofollow" target="_blank" title="Share on Facebook" onclick="window.open(this.href, 'facebook-share','width=580,height=296');return false;"><span data-uk-icon="icon: facebook; ratio: 1.2"></span></a>
 </div>