Rewriting badger in Ruby with mruby.
Mention bison is required for mruby.
Also mention that libc.a and libm.a are required.
Added mruby-process.
Added super basic option parsing.
Added support for parsing JSON.
Use mrb_print_error to also print the backtrace.
Support enabling debugging info.

* Also clean lib.mrb.
Improved option parsing.
Corrected the gitignore.
Added a rough TCPServer transport.
Added a Message module.
Added a TCPConnectBack transport.
protect internal methods.
Added a common Transport class.
Added YARD for documentation.
Ensure sent messages end in a newline.
Handle newlines in Message.
Use Rake::FileList and rake rules.
Prevent lib.c from being specified twice.