Hour of makecode rps (#579)

* local commit

* More reaction fixex

* Local commit

* Convert 'rock paper scissors' to a make project

* Revert the 'reaction time' stuff

* Add image for project page

* Add finished make image in last step

docs/projects/rock-paper-scissors/make.md

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+# Make
+
+## Materials
+
+* @boardname@, battery holder and 2 AAA batteries
+* Roll of duct tape (maybe 2 rolls if you want another color)
+* Velcro
+
+## Steps
+
+### Step 1 - Cut the pieces of tape
+
+Cut 2 Pieces of Duct Tape about 9-10 inches long. Press the sticky sides together to form one piece of tape (this is tricky!). This makes the band of your wrist cuff.
+
+![Cut and roll the tape](/static/mb/projects/rock-paper-scissors/cut-roll-tape.jpg)
+
+### Step 2 - Attach the micro:bit and battery pack
+
+Mount the micro:bit in the center of your wrist cuff band by looping a piece of duct tape around in a circle.
+
+![Attach a micro:bit](/static/mb/projects/rock-paper-scissors/attach-mb.jpg)
+
+Attach the battery pack to the micro:bit and tape it on the wrist cuff band on the opposite side from the micro:bit.
+
+### Step 3 - Add the wrist fasteners the micro:bit
+
+Attach Velcro tabs at the ends of the wrist cuff as fasteners. You may need to try it on your wrist to adjust the size.
+
+![Add wrist fasteners](/static/mb/projects/rock-paper-scissors/wrist-fastener.jpg)
+
+### Step 4 - Decorate it!
+
+Decorate the wrist cuff with stickers, glitter, markers, etc.
+
+![Rock Paper Scissors game on wrist](/static/mb/projects/rock-paper-scissors.jpg)
+
+## ~button /projects/rock-paper-scissors/code
+NEXT: Code the game!
+## ~