Update react-scripts in group default to the latest version 🚀

[greenkeeper]

The dependency react-scripts was updated from 2.1.8 to 3.0.0.

This version is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

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[vercel]

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[codecov]

Codecov Report

Merging #148 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #148   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          12     12           
  Lines         491    491           
  Branches       83     83           
=====================================
  Hits          491    491

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[coveralls]

Pull Request Test Coverage Report for Build 746

• 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 100.0%

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Totals
Change from base Build 729:	0.0%
Covered Lines:	431
Relevant Lines:	431

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💛 - Coveralls