Add note about property assignment.
Fix documentation formatting.
Provide CoffeeScript class with error information.
* Allows access at any time without continually needing to pass line,
  column, etc to instance methods.
Merge branch 'peg-coffee' into better-error-reporting

Conflicts:
	grammar/ccss-compiler.peg
	lib/ccss-compiler.js
	lib/grammar.js
	src/grammar.coffee