Renamed example to fit convention.

Author: kattni

examples/neopixel_trellism4.simpletest.py renamed to examples/trellism4_neopixel_simpletest.py

@@ -31,6 +31,7 @@ def wheel(pos):
 
     for press in pressed - current_press:
         x, y = press
+
         if not led_on[x][y]:
             print("Turning on:", press)
             pixel_index = ((x + (y * 8)) * 256 // 32)