Personnummer
Personnummer is a ruby class that handles [Swedish personal identity number](http://en.wikipedia.org/wiki/Personal_identity_number_(Sweden\)).
Getting started
Install from GitHub:
$ gem install c7-personnummer -s <a href="http://gems.github.com">http://gems.github.com</a>
Example usage
>> p = Personnummer.new('830428-5912')
=> #<Personnummer:0x301128 @number="830428-5912", @age=25, @valid=true, @region="Skaraborgs l\303\244n",
@male=true, @born=#<Date: 4890905/2,0,2299161>>
>> p.valid?
=> true