augment pre bootstrap grammar

to parse a self hosted grammar transliterated from the current pre
bootstrap grammar, a couple of additions are needed
- a '.' to represent "match any char"
- a word can include '?' and '+' characters
also included is a fix to charclassmember to be able to parse '\'
escaped characters
nearley gramar bootstrapped

bin\nearleyc.js - use the bootstrapped (generated) grammar
lib\nearley-language-bootstrapped.ne - the nearley language grammar
lib\nearley-language-bootstrapped.js - the generated grammar first
generated with lib\nearley-language.js and then with itself with the
pre/post generated results diff'd showing no difference
readme - contributing section
remove \r from generated grammar
unnecessary escaping in regexes
credit where credit is due
more housekeeping
0.4.0