Replaced make-node with nyc and coveralls in npm scripts closes #2

[rwky]

READ THIS FIRST!

Is this a security patch?

If you discover a security issue please create an issue stating you've discovered a security issue but don't divulge the issue, one of the maintainers will respond with an email address you can send the details to. Once the issue has been patched the details can be made public.

Checklist

• [ ] I have read the CONTRIBUTING guidelines.
• [ ] I have updated the UNRELEASED section of the CHANGELOG.
• [ ] I have added myself to the contributors section of package.json if I wish to be listed
• [ ] I have added test cases which verify the correct operation of this feature or patch.
• [ ] I have added documentation pertaining to this feature or patch.
• [ ] The automated test suite ($ npm test) executes successfully.
• [ ] The automated code linting ($ npm run-script lint) executes successfully.

[coveralls]

Pull Request Test Coverage Report for Build 127

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.06%) to 96.239%

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Totals
Change from base Build 125:	-0.06%
Covered Lines:	327
Relevant Lines:	329

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💛 - Coveralls