Add instructions and add quicklisp snippet

1 files changed, 6 insertions, 0 deletions

diff --git a/README.md b/README.md
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+++ b/README.md
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 # Advent of Code 2021
 
 These are the solutions to the [advent of code](https://adventofcode.com/2021) from 2021.
+
+To run all the days:
+
+``` bash
+sbcl --quit --load top.lisp --eval "(run-all)"
+```