Add more info about mock library and unit tests exercises with mock
remove not implementd profiling
Merge pull request #43 from ealogar/mock_testing

Add more info about mock library and unit tests exercises with mock
fixing minor issues
Merge pull request #44 from pablito56/minor_issues

fixing minor issues
feedback from PR
remove print invalid
Merge pull request #45 from ealogar/mock_testing

feedback from PR