Update README.md
Update README.md
Added comment that need to disable throttle control in-game.
added jumpjet putt-putt mode for left joystick twist

updated illustration

fixed printfs so they have newlines
Fixed button impulse times
Mythos' tweaks.

+ Hat up == cycle vision mode
+ Hat down == cycle ecm mode
Minor style normalization.

Plus, tabs are evil.  Spaces forever!