Remove Pause from game on visibility changed

[Jacques Leemans]

By default the game pauses when it loses focus, this is normally preferred, but if you have a lengthy tutorial, you want to hide the game till the tutorial is over. To do this:

• Open the exported index.html file in any text editor
• Scroll down to the function OnVisibilityChanged()
• In the if statement change cr_setSuspended(true); to cr_setSuspended(false);