Kaleidoscope Snowflake contribution: (CodingTrain#3474)

Rotated sketch 90 degrees. Added save to transparent background or black. Mouse wheel controls brush size. Added undo(just last drawn). Added instructions.
Remember! Right click drag to draw.
GitHub link: https://github.com/markcosmic/Processing-3-Max-Kaleidoscope.git

_CodingChallenges/155-kaleidoscope-snowflake.md

@@ -66,5 +66,10 @@ contributions:
       url: "https://denisovichdev.github.io/link-tree/"
     video_id: BD4Y-88ryvE
     source: "https://github.com/DenisovichDev/kaleidoscope-simulation"
+  - title: "Max Kaleidoscope"
+    author:
+      name: "Mark Zachary"
+      url: "https://github.com/markcosmic/Processing-3-Max-Kaleidoscope.git"
+    source: "https://github.com/markcosmic/Processing-3-Max-Kaleidoscope.git"
 ---
 Happy holidays! #SupportP5! This video shows an attempt to make a snowflake from a "kaleidoscope painting" effect.