pull request from bitbucket user 'mj1856'...

...https://bitbucket.org/mj1856/jstimezonedetect/commits/ae2ffe87c13f77a3d0457c1f50fcdf379a88add7

Yes, I find very useful both approaches. So now, jstimezonedetect woud be considered a small polyfill that just uses the ECMAScript I18n API when it's there.

I'm not bumping version b/c first we should agree this is a valid contribution and b/c we should update the README. Apologies for including minified version if this is not what you want.

NOTE: Current polyfill for ECMA-402 (https://github.com/andyearnshaw/Intl.js) is not supporting timezones.