Create README.md
Allow comments to include characters ' " { }
Removed SyntaxAlpha variant.
Rearrange:
*Put all keys at top
*Add a few line breaks between sections
* Compact <true/> tags.
Added more spaces as section breaks

Finished rearrange
Added additional keys:
*spell check code: F
*text completion: T
*Online reference: T, arduino.cc/reference/FUNCTION
*scan functions: T
	*scan folds: T
Predefined names:
*added many more, inc. A0-15, Arduino.h PORT* DDR* TIMER*, and a couple missed normal ones.
Keyword list:
*Added many more, some missed standard ones, many c++ ones.
*sorted alphabetically.