Add templates for articles with videos

_posts/_template/2019-01-01-image-article-name.md

@@ -3,7 +3,7 @@ title: Title
 date: 2019-01-01 7:01
 authors: Name
 image-caption: A caption for the cover image
-layout: article
+layout: image-article
 categories: articles
 ---
 

_posts/_template/2019-01-01-video-article-name.md

@@ -0,0 +1,11 @@
+---
+title: Title
+date: 2019-01-01 7:01
+authors: Name
+video-caption: A caption for the cover image
+video-id: 
+layout: video-article
+categories: articles
+---
+
+Content