Update 2020_shake.ino
+# SPDX-FileCopyrightText: 2020 Limor Fried for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
#include <Adafruit_LIS3DH.h> // For accelerometer
#include <Adafruit_PixelDust.h> // For simulation
#include <Adafruit_Protomatter.h> // For LED matrix
