Use a matrix key pad as input and LCD as output for particle photon

First introduction in examples with Paperino.

Want your Rotilio to display sensor reading? An OLED LCD display integration might be the perfect solution!

It's Pong-ish. Mostly demo code for an IoT bootcamp, showing use of the display, encoder, and some programming concepts introduced in class.

This code allows a program to count the total number of NeoPixels in a string with out lighting them