removed the need to provide the pin argument for Esp8266 NeoPixelBus
where it was ignored.
Added another DotStar color feature.
Fixed DotStar color features to use RgbColor when there is no need for
RgbwColor.
two samples now are included
improved the readme (changed from txt to md)
NEO_RGB doesn;t require 400khz support, and 400khz support by default
isn't compiled in