Adafruit Neopixel Library [PORTED]

I have a first-pass of the technobly library this is based off of running RGBWstrandtest.ino using the pinSetFast() and pinResetFast() changes recommended elsewhere. No guarantees that I got all the color ordering correct – this is a machete hack not anything ready for a pull request yet – but it should work.

instantiate with:
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, SK6812RGBW);

library changes:

Feel free to grab the code / send me feedback at jstockdale@gmail.com