Adding unit test for credentials.clean
Rewrite credentials API to work with save on deploy.
Ignore the test coverage directory.
Merge pull request #251 from Belphemur/credentials-pr

Rewrite credentials API to work with save on deploy.
Merge pull request #268 from hbeeken/test-coverage

Adding unit test for credentials.clean
Merge pull request #270 from hindessm/ignore-coverage

Ignore the test coverage directory.