Exclude unnecessary files from the npm package

[pkuczynski]

Listed a few files and folders which are currently included in the published npm package, while they should not be.

[coveralls]

Pull Request Test Coverage Report for Build 873

• 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 90.486%

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Totals
Change from base Build 859:	0.0%
Covered Lines:	568
Relevant Lines:	581

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💛 - Coveralls

[lancedikson]

Thanks :)