From 77edeb3fc7459473983a9173c18f3c4b08fdf98c Mon Sep 17 00:00:00 2001
From: Colin McMillen <colin@semicolin.games>
Date: Mon, 30 Nov 2020 11:18:23 -0500
Subject: [PATCH] add README for 2020

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 2020/README.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 2020/README.md

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+# Advent of Code 2020, C#
+
+To build & run them, simply `dotnet run`.
+
+To test the solved answers against the verified solutions, `dotnet test`.