Add NSLocale support

[dzenbot]

This works great for english, but when the device is under another language it stills trows dates in english.

[billymeltdown]

It looks like @hectr started this in #15 so I'm going to close this thread here, but I do think support for other Locales is important. I don't quite have the time to do this integration and test it properly in an internationalized project, but hop on over to that Issue, it appears to be a start.