Added an inputUtility method. Use case when the user specifies the -f and the file does not exist.
Completed the InputUtility method for saving credentials.
Renamed test method.
Added coverage for Application class.
Delete the test file at the end of the test in the testSaveCredentials method.
Merge branch 'save-credentials-in-file'
Merge branch 'master' of https://github.com/petit-prince/pass-wrapper