Updated my Neopixel library (rgb-order!)

My awgrover/neopixel library has all the features of the Adafruit neopixel library. Because I mechanically converted it. But, setting the “t” (rgb order) was arcane.

A second person asked about how to set the RGB order (“t”). So, I provided a more friendly way.

This is certainly more friendly than trying to read Adafruit’s code, and copy the value. But, does someone have a better idea (the other XOD neopixel libraries don’t have a way to set the rgb-order?)?

I also added the “polymorphic” nodes to allow equal, if-else, defer, etc.

And updated the instructions for the examples.