Add Coverage for code coverage testing
Merge pull request #4 from normanjaeckel/Coverage

Add Coverage for code coverage testing
Insert pep8 check.
Merge pull request #6 from normanjaeckel/pep8

Insert pep8 check.
Force 100% unittests.
Merge pull request #7 from normanjaeckel/CoverageAndTravis

Force 100% unittests.