added really basic example for createtColorPicker
added really basic example for createtColorPicker

- the current example is doing too much for beginners `lerpColor()`, two callback functions, etc.. here's a few liner to get people started.

mlarghydracept/p5.js,limzykenneth/p5.js,dhowe/p5.js,processing/p5.js,dhowe/p5.js,processing/p5.js,limzykenneth/p5.js,mlarghydracept/p5.js