Fixed PSSA issues in xPackageResource - Fixes #131

[PlagueHO]

This change is

[kwirkykat]

@PlagueHO Tests are failing because some merge artifacts were accidentally left in

[PlagueHO]

Sorry @kwirkykat - what a noob 😄 All fixed. Fixed the bad unit test as well.

[kwirkykat]

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Reviewed 1 of 2 files at r2, 2 of 2 files at r3.
Review status: all files reviewed at latest revision, 1 unresolved discussion.

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README.md, line 357 [r3] (raw file):

    * Updated xService resource to allow empty string for Description parameter.
* Merged xProcess with in-box Process resource and added tests.
* Fixed PSSA issues in xPackageResource.

This should be moved up to the Unreleased section

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