if the card type is invalid, allow this to return nil even if allowed_card_types is set
simple command line app
mark dependency on base_app
docs for the cmdline util
fixing typos
forgot base_app dep in other 3 cases
handle completely invalid numbers
Merge pull request #5 from kyleburton/cmdline
Bump version to 1.1.0.
adds support for JCB cards
Merge pull request #6 from keichan34/master

Adds support for JCB cards
fix card type symbol in the example, should be :master_card not :mastercard
Merge pull request #7 from alanho/master

Fix card type symbol in the example, should be :master_card not :mastercard