Add og image for social media share. Add url to config.

Author: Utwo

_config.yml

@@ -14,6 +14,7 @@
 # You can create any custom variable you would like, and they will be accessible
 # in the templates via {{ site.myvariable }}.
 title: Cluj JavaScripters
+url: http://cluj-javascripters.github.io
 # email: your-email@domain.com
 description: > # this means to ignore newlines until "baseurl:"
   Cluj JavaScripters is the best JS community evah!

_layouts/default.html

@@ -12,7 +12,10 @@
 
 	<meta property="og:title" content="{{ site.title }}" />
 	<meta property="og:description" content="{{ site.description }}" />
-	<meta property="og:image" content="favicon-32x32.png" />
+	<meta property="og:image" content="{{ site.url }}/favicon-1200x835.png"/>
+	<meta property="og:type" content="website"/>
+	<meta property="og:url" content="{{ site.url }}"/>
+	<meta name="theme-color" content="#fefefe">
 
   <meta name="HandheldFriendly" content="True" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />