One more testimonial (#281)

README.md

@@ -17,6 +17,8 @@ Go to https://www.excalidraw.com to start sketching
 
 <a href="https://twitter.com/kyehohenberger/status/1214288572037025792"><img width="423" src="https://user-images.githubusercontent.com/197597/71851802-34f13880-308c-11ea-9416-191099e6349c.png"></a>
 
+<a href="https://twitter.com/jordwalke/status/1214858186789806080"><img width="434" src="https://user-images.githubusercontent.com/197597/72036874-07a1b780-3251-11ea-99e8-6bafd93483a0.png"></a>
+
 
 ## Run the code