Merge branch 'master' of gitlab.cs.umd.edu:keleher/cmsc436PublicF2021

assign1/README.md

-# Assignment 1: Swift and Generics
+# Project 1 (`assign1`): Swift and Generics
 
 ## Goals
 The primary goal of this project is to to familiarize yourself with
@@ -162,8 +162,10 @@ You **must** define and use the generic function `rotate2D()` to get
 any credit, do not define a `Tile`-specific version of rotate or use
 `rotate2DInts` at all in the `collapse()` function.
 
+The rotation functions work as follows: ![rotate2](rotate2.svg)
 
-### testing
+
+## Testing
 
 The provided copy of `assign1Tests.swift` should have been copied
 **unaltered** into your project. Test your project by