Bump version of fitbit-js

Prior to this PR, the module required version `0.2.0` of the `fitbit-js` module. This version was incompatible with an [API change notice](http://status.fitbit.com/incidents/2014-08-04) that was sent out via email. I had mistakenly thought we were unaffected. The new version, `0.3.0` uses SSL connections with the API.