Add demo video

Author: rocktronica

assembly_guide/docs/what-youll-be-making.md

@@ -17,8 +17,6 @@ Higher Lower is a 3D-printed, screen-free, handheld electronic game about arbitr
 
 This guide walks you through how to solder and assemble it, step by step. It will take 30 minutes or so, not counting 3D-printing time.
 
-<!-- TODO: demo video -->
-
 <!-- TODO: blog link -->
 
 ### How to play "Higher Lower"
@@ -29,7 +27,10 @@ Two different tones play. Is the second tone _higher_ or _lower_ than the first?
 - Your score is how many rounds have passed, and it's announced after each round as series of happy trill noises.
 - For a multiplayer game, hand off to the next player after each round. The last player to successfully complete their round wins.
 - At the start of each new game, the "Higher Lower" theme song plays. It is a very good song.
-- Adjust volume and game difficulty by turning trim potentiometers on the PCB.
+- Upon completing all ten rounds of guesses and winning the game, the theme plays again, faster and _faster_ and **_faster_** until the machine finally resets into a new game.
+- Adjust volume and game difficulty by opening the enclosure and adjusting trim potentiometers on the PCB.
+
+<div style={{padding:"56.25% 0 0 0",position:"relative"}}><iframe src="https://player.vimeo.com/video/1075918437?badge=0&amp;autopause=0&amp;player_id=0&amp;app_id=58479" frameborder="0" style={{position:"absolute",top:0,left:0,width:"100%",height:"100%"}} allow="autoplay; fullscreen; picture-in-picture; clipboard-write; encrypted-media"  title="Higher Lower game demo"></iframe></div><script src="https://player.vimeo.com/api/player.js"></script>
 
 ### Disclaimers
 

readme.md

@@ -8,11 +8,12 @@ PCB is finalized. Kits and assembly documentation coming soon!
 
 Obviously, I'd prefer you buy the kit from me. But, if circumstances prohibit, I've uploaded the [Higher Lower PCB to OSH Park](https://oshpark.com/shared_projects/yGNulCRo); please buy it from them with my blessing.
 
+Gameplay demo: [https://vimeo.com/1075918437](https://vimeo.com/1075918437)
+
 Assembly guide: [https://oskitone.github.io/higher_lower](https://oskitone.github.io/higher_lower)
 
 ## TODO
 
-- Nice demo video
 - "How it works" sections in assembly guide
 
 ## How to play "Higher Lower"