Dedicated gemfiles and specs for Mongoid 3 and 4
Specs on mongoize with invalid currency
Merge pull request #209 from timstott/dedicated_gemfiles_and_specs_mongoid_3_and_4

Dedicated gemfiles and specs for Mongoid 3 and 4
Rescue from unknown currency errors on mongoization
Merge pull request #211 from timstott/mongoize_unknown_currency

Mongoize unknown currency