Update OpenApi Validation

[Studnicky-GB]

Update dependency From:

• "openapi-schema-validation": "^0.4.2" (deprecated) to:
• "openapi-schema-validator": "^3.0.2" (preferred)

resolves #108

[coveralls]

Pull Request Test Coverage Report for Build 315

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 94.78%

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Totals
Change from base Build 312:	0.0%
Covered Lines:	221
Relevant Lines:	227

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💛 - Coveralls

[anttiviljami]

+1 for this

[Studnicky-GB]

I don't think that's a real build err...

16 01 2019 19:52:43.595:ERROR [config]: Error in config file!
 Error: SAUCE_USERNAME and/or SAUCE_ACCESS_KEY is not set

[JamesMessinger]

Closing this because Swagger Parser now uses openapie-schemas instead of openapi-schema-validation.