Adding the code for the Pixel Chase Game Learn Guide.
Using 61 NeoPixels in a circle, a "chaser" pixel flies around. A "target" pixel is setup randomly in the circle and using a push button, you try and hit the target with the chaser. The color changes and speed increases with each level up. If you press the button without being on target, the game resets. Once you win all the levels, the NeoPixels go into rainbow_cycle for a bit and then a new game begins.
