How is light to be implemented using ofLight with the programmable renderer?

Thanks! But is there a way to check which open frameworks version I have as I think I have 0.8.something and if 0.9.0 is the new version I would have to change a lot of the code I have been working on, which I don't mind if it is necessary.
Also, does this mean ofLight cannot be used on previous open frameworks versions using the programmable renderer?

Thanks

J