adjusting README

Author: shiffman

README.md

@@ -1,17 +1,21 @@
 # Wave-Function-Collapse
 
-[WFC using local storage](https://editor.p5js.org/kfahn/full/iNUF-Lgdf)
+## Plan
 
-## Completed
+### Completed
 - [x] Implementation of Tile Model (see: https://youtu.be/rI_y2GAlQFM)
 
-## Corrections
+### Corrections
 - [ ] Additional Rules for tiles 4 and 5
 
-## Next Steps and Refactoring
+### Next Steps and Refactoring
 - [ ] Filter out redundant tiles
 - [ ] Recursive entropy reduction
 - [ ] Shannon entropy
 
-## Future work
+### Future work
 - [ ] Overlapping model
+
+## Related work
+
+* [WFC using local storage](https://editor.p5js.org/kfahn/full/iNUF-Lgdf) by @kfahn22.