Add new localizations

[neilgupta]

Currently, Sherlock only supports US English locale format for times and dates. It would be nice to add support for other formats (UK) or other languages, with an option to pass the desired locale to Sherlock during parse or via Watson.

[thomasbrunstrom]

I've made a version which supports localization, don't know if you'd like my implementation and I just made some small updates, so the code isn't really optimized and clean. Do you want med to make a fork so you can look at it?

[neilgupta]

That's awesome! You should definitely open a pull request and hopefully we can get it merged :)

[jbpin]

Nice job... I'm keen to test that. I can help to make a french version.