Add OG images to posts

_posts/2010-06-30-iphone-4.md

@@ -7,6 +7,7 @@ categories:
 - iphone
 - iphone-4
 layout: post
+image: "blog/iphone-4/IMG_0035.jpg"
 ---
 
 <figure>

_posts/2010-07-23-iphone-4-revisited.md

@@ -7,6 +7,7 @@ categories:
 - iphone
 - iphone-4
 layout: post
+image: "blog/iphone-4-revisited/IMG_0052.jpg"
 ---
 
 <figure>

_posts/2010-07-26-apple-in-ear-headphones.md

@@ -9,6 +9,7 @@ categories:
 - iphone
 - iphone-4
 layout: post
+image: "blog/apple-in-ear-headphones/IMG_0053.jpg"
 ---
 
 <figure>

_posts/2011-10-06-steve-jobs.md

@@ -7,6 +7,7 @@ categories:
 - steve-jobs
 - visionaries
 layout: post
+image: "blog/steve-jobs/steve-jobs.jpg"
 ---
 
 <figure>

_posts/2014-02-08-zx81.md

@@ -4,6 +4,7 @@ date: Sat, 8 Feb 2014 00:00:00 +0000
 layout: post
 categories:
 - blog
+image: "blog/zx81/154120730_9cb06dbc98_o.jpg"
 ---
 
 <figure>

_posts/2014-04-29-zx-spectrum-plus-2.md

@@ -4,6 +4,7 @@ date: Tue, 29 Apr 2014 07:28:00 +0000
 layout: post
 categories:
 - blog
+image: "blog/zx-spectrum-plus-2/5364873704_0fe55f7e3e_o.jpg"
 ---
 
 <figure>

_posts/2018-01-21-building-a-keyboard.md

@@ -7,6 +7,7 @@ categories:
 - hardware
 - keyboards
 date: Sun, 21 Jan 2018 17:38:21 +0000
+image: "blog/building-a-keyboard/DSCF7141.jpg"
 ---
 
 <figure>

_posts/2018-08-10-chess-and-recursion-part-1.md

@@ -8,6 +8,7 @@ categories:
 - elixir
 - games
 date: Fri, 10 Aug 2018 00:00:00 +0000
+image: "blog/chess-and-recursion-part-1/escher-chess.jpg"
 ---
 
 <style>

_posts/2019-03-10-brompton.markdown

@@ -8,6 +8,7 @@ tags:
 - fun
 - brompton
 date: Sun, 10 Mar 2019 17:24:23 +0000
+image: "blog/brompton/IMG_0927.jpg"
 ---
 
 <figure class="photo photo--wide">