Standard format for cRGB

[Sodium-Hydrogen]

I prefer to use {0, 0, 0} to set the values of the LEDs versus having a cRGB variable that you have to set with var.r = 0; var.g = 0; var.b = 0; to help keep this standard I changed:

• all the libraries that use cRGB to enforce RGB data order.

I also changed:

• some of the examples to demonstrate this simpler way of declaring a struct.
• added keywords.txt for the Arduino library.

I do not have anything setup for testing the AVR libraries to ensure functionality. So functionality is only known for the following:

• [x] Working for Arduino
• [ ] Working for WS2812 AVR
• [ ] Working for APA102 AVR