A gem that provides credit card validation. It is basically a ruby port of the javascript credit card validator by Thomas Fuchs (madrobby) (http://github.com/madrobby/creditcard_js).
Tobias Crawley, Bruce Hauman, Phil McClure, Gabriel Reis, Eric Young, Kyle Burton <kyle.burton@gmail.com>
gem "credit_card_validator", "~> 1.1.0"