Merge branch 'issue-14' into 'master'

Add site.url to head.html

See merge request !26

_includes/head.html

@@ -11,7 +11,7 @@
 	<meta name=”twitter:card” content=”summary_large_image”>
 	<meta property="og:title" content="{{page.title}}"/>
     <meta property="og:description" content="Revuo Monero is a weekly newsletter where you can find find the most recent Monero news.">
-    <meta property="og:image" content="https://revuo-monero.com/img/rm-icon.png">
+    <meta property="og:image" content="https://revuo-monero.com/img/rm-icon.jpg">
     <meta property="og:site_name" content="revuo-monero.com, Revuo Monero">
     <meta property="og:url" content="https://revuo-monero.com">
     <meta property="og:type" content="website">
@@ -21,7 +21,7 @@
     <link rel="icon" type="image/png" sizes="16x16" href="/img/favicon-16x16.png">
     <meta property="twitter:description" content="Revuo Monero is a weekly newsletter where you can find find the most recent Monero news.">
     <meta name=”twitter:title” content="{{page.title}}">
-    <meta name=”twitter:image” content="https://revuo-monero.com/img/rm-icon.png">
+    <meta name=”twitter:image” content="{{site.url}}{{page.image}}">
 
 	<!-- CSS & fonts -->
 	<link rel="stylesheet" href="{{ "/css/main.css" | prepend: site.baseurl | replace: '//', '/' }}">