Merge pull request #198 from kattni/cpx-express-lib

Added shake threshold code

Author: kattni

CircuitPython_Made_Easy_On_CPX/cpx_shake_threshold_red_led.py

@@ -0,0 +1,6 @@
+from adafruit_circuitplayground.express import cpx
+
+while True:
+    if cpx.shake(shake_threshold=20):
+        print("Shake detected!")
+        cpx.red_led = True