Feature: Setup vsts builds & switch from yarn to npm 5

[timotheeguerin]

• Include setting up vsts build (Windows, Linux, Osx)
• Switch back to npm from yarn as there is a package-lock.json
• Added junit reporter to see tests in vsts

[codecov]

Codecov Report

Merging #1479 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1479   +/-   ##
=======================================
  Coverage   59.01%   59.01%           
=======================================
  Files        1050     1050           
  Lines       24629    24629           
  Branches     3395     3395           
=======================================
  Hits        14534    14534           
  Misses      10095    10095

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