PEP8 & comment

sketch_180121b/slider.py

@@ -1,7 +1,10 @@
 """
 Slider code by Peter Farell 
-https://twitter.com/hackingmath
+htts://twitter.com/hackingmath
 http://farrellpolymath.com/
+
+[ with very minor tweeks by Alexandre Villares
+  http://abav.lugaralgum.com ]
 """
 # USAGE:
 #>from slider import Slider
@@ -44,7 +47,6 @@ class Slider:
     def value(self):
         '''updates the slider and returns value'''
         pushStyle()
-        colorMode(RGB)
         rectMode(CENTER)
         # black translucid rect behind slider
         fill(0, 100)