Luhn

A simple ruby solution about luhn algorithm. see Naver Dictionary or Wikipedia

Testing

Set Up

You need to install bundler:

$ gem install bundler

and install gems of this project:

$ bundle install

Run Test

To run the tests:

$ bundle exec rspec spec --format=doc

or autotest with guard:

$ bundle exec guard

Author

Sunghee Kang <paranoiase@gmail.com>