Removed old ledstrip.py, which should never have been committed.  Duplicate of __init__.py
Replaced the from Tkinter import * with import ALL for the screen renderer
Changed LedStrip refresh rate parameter to be set in ms instead of hz
Removed comment about an issue that has since been fixed
Fixed rainbow_cycle to function correctly by fading the strip through the color wheel
Changed step_size parameter to speed and modified to correctly change the speed of the cycle
Added run.py to include an example of rainbow_cycle
Merged rainbow_cycle and master