Hands on examples

Hi all!

I have just sent to the administrators two examples dealing with LEDs, I guess they will make them available in the next days.

The fist one, which I wrote in collaboration with Gustavo, helps you to controle a circle of 8 LEDs with a joystick.

The second one simulates a "shooting star" (ejem, doesn't really look like a star, but it shoots...) that travels through a line of 11 LEDs.

If you have any comments, evolutions or bugs please don't hesitate to let me know!

Cheers,

Cristina