Provides a coverage-warning command that when run emits the following message:
With Great Power Comes Great Responsibility:
Adding tests solely for the purpose of increasing code coverage
considered harmful:
* http://www.dan-manges.com/blog/increasing-code-coverage-may-be-harmful
Good tests verify the desired behavior of the program in the tersest,
most easy to comprehend manner. Your coverage report is available as
'coverage-report.html'.
Please use this information in a responsible manner.allowing you minimize the chance that any coverage report facility you provide is misused.