Merge pull request #1 from leandrocp/fix-helper-undefined

Merge fix-helper-undefined
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Bump version.
  Add acknowledgement to readme.
Add support for optional locale

If not defined, the default locale is moment().locale()
Fix relative path to util dir.
It works, but it´s best to use addon name.
Merge pull request #4 from leandrocp/optional-locale

Optional locale