Add screenshots to README

Author: Chris Vibert

README.md

@@ -15,6 +15,18 @@ Activate the extension by typing "gh" followed by a space; you can then either
 - Hit space and then enter to go to the target GitHub account itself
 
 ## How it's built
+
 `javascript/` --> initially built with vanilla JavaScript, HTML, CSS
 
-`mint/` --> later rebuilt with [Mint](https://www.mint-lang.com/) just to try out something new
+`mint/` --> later rebuilt with [Mint](https://www.mint-lang.com/) just to try out something new
+
+## What it looks like
+
+Keeping the CSS simple...
+
+<table>
+  <tr>
+    <td width=320><img src="./screenshot-1.png" width=270></td>
+    <td width=320><img src="./screenshot-2.png" width=270></td>
+  </tr>
+</table>