specified locale wasn't load when dir was used in load()
Update README.md
Merge pull request #71 from dhpollack/dhpollack/load-dir-fix

specified locale wasn't loading when dir was used in load()
Fix the phantomjs based test

* Update the depedency package versions
* To run headless browser(phantomjs) based test, we need a static
  webserver. Otherwise all ajax requests will fail. For this add
  depedency to grunt-contrib-connect and configure.
* This fixes the "PhantomJS timed out" errors while running 'npm test'
[ADD] Add ability to rely on default configuration when loading messages.