fix: Added testURL in jest.config

[smacpherson64]

What:
Implemented fix from @jgoz to failing TI builds. See the following for more details:
#47 (comment)

Why:
The Travis builds are currently failing.

How:
Implemented fix from @jgoz and added a testURL into the jest.config

Checklist:

• Documentation N/A
• Tests N/A
• Updated Type Definitions N/A
• Ready to be merged
• Added myself to contributors table N/A

[codecov-io]

Codecov Report

Merging #48 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #48   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          14     14           
  Lines         119    119           
  Branches       25     25           
=====================================
  Hits          119    119

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[gnapse]

This is weird, but ok, good that @jgoz figured it out. Is this ready to be merged? Is this what has #47 build failing?

[jgoz]

@gnapse Yes, it's related to a jsdom upgrade: jestjs/jest#6766

[gnapse]

🎉 This PR is included in version 1.12.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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