Merge pull request #15 from mschulkind/master

Add request and servlet classes to library jar.
Added a scope method for OAuth2.

The OAuth2 implementation needs to allow a shim to supply a scope when doing the authorization dance. This adds that functionality by adding an abstract function for the user to implement that will return the scope and a check in the redirect URL creation to add it if given.
Merge branch 'master' of github.com:openmhealth/shim
Adding the 2Net shim.
Adding Fitbit shim.
Adding a Withings shim with body metrics support.
Updated the withings shim with Pulse tracker data.
Update shim jars to latest
Adding a BB+ shim.