Busby flying aces

WIP

• single button flyer - press button to ascend
• beat 99 other flyers to win the cup
• avoid ground, landscape and other obstacles
• collect stars to temporarily speed up
• avoid running out of fuel!

Future:

• add music and sound effects
• fix plane crash
• ? convert to stages/levels instead of continuous racer
  
• ?add ability to hit other planes from above or behind