linking to followup video

Author: sjml

README.md

@@ -1,5 +1,7 @@
 # WasmBots
 
+(NB: this repo is active, but progress may be a little slow. [see this video for more specifics.](https://www.youtube.com/watch?v=rcWSoCT37MQ))
+
 [A multi-wizard arena where all the competitors are bots!](https://shaneliesegang.com/projects/wasmbots/) (Always a latest build at [GitHub Pages](https://sjml.github.io/wasmbots/), but that site is the canonical deployment.)
 
 <p align="center"><img src="https://github.com/sjml/wasmbots/raw/main/art/misc/wasmbots-tease.gif" alt="WasmBots Teaser Image"></p>