Make keyboard input less annoying

[DouglasMeyer]

If you add return false at the end of the keyPressed function:

WorldsHardestGameAI/WHG - level3/sketch.js

Line 325 in 451ed29

}

That will prevent the page from moving when the user presses space or the arrow keys.

[Prometheos2]

@joglr (and Code Bullet) made a another solution in the MR #6.

It is however different; so it might be a good idea to merge the two ideas before pulling on the main repo.