Simplify npm scripts

[XhmikosR]

No description provided.

[codecov-commenter]

Codecov Report

Merging #64 (8fa0202) into master (8e72b7c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #64   +/-   ##
=======================================
  Coverage   92.66%   92.66%           
=======================================
  Files          23       23           
  Lines         477      477           
=======================================
  Hits          442      442           
  Misses         35       35           

Flag	Coverage Δ
ubuntu-latest-12	92.56% <ø> (ø)
ubuntu-latest-14	92.56% <ø> (ø)
windows-latest-12	92.47% <ø> (ø)
windows-latest-14	92.47% <ø> (ø)

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[bcomnes]

LGTM