Add the rest of the documentation for the public API.

Next task: re-organize code
  Goals:
    1) A command-line code generation tool
       a) CLI input
       b) lexer - parsers - resolver - reflector - generator
       c) importer
    2) Refine Header API used by generated classes
    3) A master API module to expose:
       a) Get/Set/Has/Ext/Default/Merge API
       b) Wire API
       c) Reflection API
       d) API for extensions?