adding arduino license

BlitzCityDIY · BlitzCityDIY · commit 38e6c13866dd · 2023-06-20T12:40:32.000-04:00
diff --git a/RP2040_Prop-Maker_Feather_Examples/Arduino_Prop-Maker_Feather_Example/Arduino_Prop-Maker_Feather_Example.ino b/RP2040_Prop-Maker_Feather_Examples/Arduino_Prop-Maker_Feather_Example/Arduino_Prop-Maker_Feather_Example.ino
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2023 Limor Fried for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
 #include <Adafruit_NeoPixel.h>
 #include <Adafruit_LIS3DH.h>
 #include <Adafruit_Sensor.h>
