Added 500 errors for missing exceptions.
Added a test case trying to verify that 500 is thrown back. (Currently test case does not verify this)
Added warnings for unexpected exceptions in OAUTH implementation.
Changed imports back to only include SC_BAD_REQUEST and SC_OK.
Removed test that was based on previous exception handling.
Merge pull request #25 from GERey/OAuth_Exceptions

O auth exceptions
Merge branch 'two-dot-o' into unique-properties