requirements.txt: add Adafruit-PlatformDetect

diff --git a/requirements.txt b/requirements.txt
index 1468be88e2c47f91c745e6457813fe889258a9a2..a694e2389d9636accb5d74f05ddaa2ad4c4cf315 100755 (executable)
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+Adafruit-PlatformDetect
 Adafruit-GPIO
 RPi.GPIO; platform_machine=='armv7l' or platform_machine=='armv6l'
 rpi_ws281x>=4.0.0; platform_machine=='armv7l' or platform_machine=='armv6l'