Updates the Preloader to work again

This was made possible by the new update Joshua did to the ApplicationMain.hx
Merge pull request #940 from sruloart/dev

Updates the Preloader to work again, safely
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel into tapmania

# By sruloart
# Via Gama11 (1) and sruloart (1)
* 'dev' of https://github.com/HaxeFlixel/flixel:
  Updates the Preloader to work again