fixed java version to 1.6
rethrow exceptions
make field private
defensive copy of dates in TokenOptions
use Map instead of JSONObject for parameters
updated examples in readme
use helper function to copy dates
Merge branch 'pom' into v2
Modifying previous tests and adding new (failing) tests for requiring the a 'uid' field
Adding validation on input data
updating README and switching back a RuntimeException
Switching back to built-in exception and cleaning up Boolean classes to use primitive
version bump
version bump
Merge pull request #9 from firebase/require-uid

v2.0.0