improve docs in docs/ directory
update test/ directory
update test/ directory
update Gemfile to support mswin/ruby on rib dep.
fix Gemfile on local computer.
doc, license updates
readme.md update
update README.md
readme.md install update
doc updates
add parenthesis around integers in docs
add .bundle/config
update ChangeLog.txt
drop older portions of changelog.txt
test updates
update Rakefile and Gemfile
improve binding.repl.rb and exit_value.rb
binding.repl.rb updates
add constant values for default lookup value
make a local copy of the LOOKUP table in #initialize.