Added Time and Identification

I needed random dates, month names, drivers license numbers, social security numbers, genders, and random ethnicity. So I added new modules to handle these and wrote tests to pass them.

There was a case where I needed to use letterify/bothify, but I needed a capital letter, so I added a way to provide if the letters should be capitalized or not when generated.

I also fixed some of the deprecation in the tests, where it was using Address.us_zipcode, etc.

Thanks for an awesome gem!
Andy