Fix sneaky ruby 2.0 incompatibility
Fix sneaky ruby 2.0 incompatibility

* Ruby 2.0 doesn't support required kwargs. This wasn't caught
  previously because the file was not being loaded. This reinforces the
  need for #130.

karimmtarek/pakyow,jphager2/pakyow,jphager2/pakyow,karimmtarek/pakyow,jphager2/pakyow,karimmtarek/pakyow