Use a more generic serialization function to emit the parser rules

This allows the compiler to focus just on rule-set transformations.
Eliminate output of undefineds
Use Javascript "generated identifier" syntax for uniqids
Use output helpers to make the emitter robust to change
Separate the actual generation and serialization from the rule compilation
Merge pull request #24 from aredridel/separate-compiler-parts

Separate compiler parts
Fix literal inconsistency
Added basic error detection.
documented error detection
increment version to 0.2.2
MIT Licensed