fixed -h --help test to actually confirm if the right message is shown

[joshdeese]

Description

Updated test for -h and —help flags to verify correct output message

Fixes # #28

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[welcome]

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[jamesgeorge007]

We're migrating to avajs. You may refer how the very first test case is written and may follow a similar approach.