Support for name and email
Reverting to oauth2, other method failed.
Improving tests
Adding more tests
Minor fixes
Merge pull request #22 from mitxlti/feature/parse_xml_response

READY FOR REVIEW: Parse LTI response to confirm that it is success
I have reviewed these changes and believe the code is ready to merge.
Remove __init__.py from test folder per:
http://pytest.org/latest/goodpractises.html#choosing-a-test-layout-import-rules