Raise exception when passed an unknown country name or code
Merge pull request #75 from scudco/fix-undefined-method-first

Raise exception when passed an unknown country name or code
Fix prompt and include_blank support in Rails 3.2
Merge pull request #72 from scudco/fix-rails3-select-options

Rails 3.2 prompt and include_blank support
Update changelog for next version
Bump to 2.0.1
Update gemfiles for tests
Add custom format support