Updated demo

The demo has been updated to version 220426:

• default crank style is now “constant”, which is what it should have been!
• readme has been updated to better describe the controls

Controls

• any combination of d-pad, A/B, Crank
• d-pad U/D, or A/B = accel/brake
• d-pad L/R, or Crank = steer left/right

Crank Styles (access through Menu > Debug Menu)

• constant (default)
  • car turns in the direction of cranking
  • stop cranking at any time to drive straight
• momentary
  • car turns in the direction of cranking
  • return crank to top position to drive straight
• analogue
  • car turns in the direction of cranking
  • distance from top positon is tightness of turn
  • return crank to top position to drive straight
  • like a real life steering wheel
• directional
  • car drives in direction of crank position