Some improvements for timezone extractor.
* Updated demo.
* Updated test.
* Return undefined for invalid Date.
Merge remote-tracking branch 'remotes/origin/master' into dev
Issue #4: Add millisecond extractor
* Added millisecond extractor.
* Added relevant tests.
* Updated some other tests as well.
Improved demo
Updated version number
Merge pull request #11 from dnasir/dev

Merge dev > master