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README.md

 # short-exercises
 
-Source templates for short exercises during the lecture
\ No newline at end of file
+Source templates for short exercises during the lecture, sometimes with tests.
+
+## Overview:
+
+Templates are within `src/main/scala`. Parts that you should complete are
+usually marked with `???`.
+
+| lecture    |package           |
+|------------|------------------|
+| Lecture 2: | `datastructures` |