Lots of fixes and updates before prototype due

-Fixed player's starting position (so he wasn't floating at start)
-Fixed death counter so it appeared on screen
-Fixed Level 2 (gaps between platforms weren't big enough for player to
fall through)
-Added particle effect on end of level object so player can see where
end of level is
-Added resolution support for Big Sphinx
-Added GUIText at Level 3 to let player know prototype is over