add cover to arch spin posts

_posts/2018-08-15-arch-spin-pt-1.md

@@ -3,6 +3,7 @@ layout: post
 title: Arch spin pt. 1 - The perfect bootable
 subtitle: "There's no such thing . . . yet"
 description: I started trying to think of a distro that fit all my daily needs that I could take on a flash drive with me wherever I went and . . . I couldn't.
+cover: /assets/arch-spin/pt-1.png
 categories: arch-spin
 date: 2018-8-15 10:38
 ---

_posts/2018-08-17-arch-spin-pt-2.md

@@ -4,6 +4,7 @@ title: Arch spin pt. 2  - Initial setup
 subtitle: First steps to rolling your own spin
 description: Setting up the basics for build your own Arch-based spin with archiso, the official development tool
 categories: arch-spin
+cover: /assets/arch-spin/pt-2.png
 date: 2018-08-17 14:11:07
 ---
  *I **think** I'm going to call it a spin . . .*

_posts/2018-08-18-arch-spin-pt-3.md

@@ -3,6 +3,7 @@ layout: post
 title: Arch spin pt. 3 - packages.x86_64
 description: Getting all the packages you currently have installed from the Arch repos installed to your Arch ISO
 categories: arch-spin
+cover: /assets/arch-spin/pt-3/png
 date: 2018-08-18 16:52:42
 ---
 # Package configuration