Merge branch 'end-of-the-line-boys' into 'master'

Add home image

See merge request !30

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

 ---
 title: Issue 13: June 13-20, 2019
-img: "/img/img-issue13.jpg"
+image: /img/twitter-card-issue-13.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)
 

index.html

 ---
 layout: default
 title: Revuo Monero
-image: "/img/rm-icon.jpg"
+image: /img/twitter-card-home.jpg
 ---
 <!-- Posts -->
 <ul id="posts">