Organized some examples

[knowledgenude]

• Replaced deprecated nodes (not finished for logic_examples folder yet);
• Added lightning, sky texture and enabled debug console (not all examples had it enabled). I think this may improve first impressions;
• Removed pool game example. I've done it in the wrong way (used a lot of logic nodes to do simple things). Also it was not working because the updates and i don't think it worth the time to fix it. That wires may scare people from logic nodes :-1:

[luboslenco]

Thanks!