Merge branch 'issue-14' into 'master'

Add twitter card

See merge request rehrar/revuo-weekly!20

_includes/head.html

@@ -18,6 +18,9 @@
 	<link rel="apple-touch-icon" sizes="180x180" href="/img/apple-touch-icon.png">
     <link rel="icon" type="image/png" sizes="32x32" href="/img/favicon-32x32.png">
     <link rel="icon" type="image/png" sizes="16x16" href="/img/favicon-16x16.png">
+    <meta name=”twitter:card” content=”summary_large_image”>
+    <meta name=”twitter:title” content=”{{page.title}}”>
+    <meta name=”twitter:image” content=”{{page.img}}“>
 
 	<!-- CSS & fonts -->
 	<link rel="stylesheet" href="{{ "/css/main.css" | prepend: site.baseurl | replace: '//', '/' }}">

_posts/2019-05-30-issue-10.md

@@ -1,5 +1,6 @@
 ---
 title: Issue 10: May 23-30, 2019
+img: "/img/img-issue10.jpg"
 ---
 [<img src="/img/img-issue10.jpg" alt="Revuo Monero Weekly Issue 10 Image">]({% post_url 2019-05-30-issue-10 %}.html)
 

_posts/2019-06-06-issue-11.md

@@ -1,5 +1,6 @@
 ---
 title: Issue 11: May 30 - June 6, 2019
+img: "/img/img-issue11.jpg"
 ---
 [<img src="/img/img-issue11.jpg" alt="Revuo Monero Weekly Issue 11 Image" class="img-lead">]({% post_url 2019-06-06-issue-11 %}.html)
 

_posts/2019-06-13-issue-12.md

@@ -1,5 +1,6 @@
 ---
 title: Issue 12: June 6-13, 2019
+img: "/img/img-issue12.jpg"
 ---
 [<img src="/img/img-issue12.jpg" alt="Revuo Monero Weekly #12 Slide" class="img-lead">]({% post_url 2019-06-13-issue-12 %}.html)
 

_posts/2019-06-20-issue-13.md

@@ -1,5 +1,6 @@
 ---
 title: Issue 13: June 13-20, 2019
+img: "/img/img-issue13.jpg"
 ---
 [<img src="/img/img-issue13.jpg" alt="Revuo Monero Weekly Issue 14 Image" class="img-lead">]({% post_url 2019-06-20-issue-13 %}.html)
 

_posts/2019-06-27-issue-14.md

@@ -1,5 +1,6 @@
 ---
 title: Issue 14: June 20-27, 2019
+img: "/img/img-issue14.jpg"
 ---
 [<img src="/img/img-issue14.jpg" alt="Revuo Monero Weekly #14 Slide" class="img-lead">]({% post_url 2019-06-27-issue-14 %}.html)