Fixed button issue with deprecated group property

Fixed error:
Warning: The group property is being deprecated. User code should be updated to add the Button directly to the Display or other Groups.

Author: claycooper

PyPortal_NeoPixel_Color_Picker/code.py

@@ -63,7 +63,7 @@
                     style=Button.SHADOWROUNDRECT,
                     fill_color=spot['color'], outline_color=0x222222,
                     name=spot['label'])
-    pyportal.splash.append(button.group)
+    pyportal.splash.append(button)
     buttons.append(button)
 
 mode = 0