Fix opencollective postinstall in package.json for production builds

[philquinn]

Fixes #172.

Opencollective is not installed for users as it is a devdep so we need to exit 0 to make sure it doesn't fail.

https://github.com/opencollective/opencollective-postinstall#install

[codecov]

Codecov Report

Merging #173 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #173   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          10     10           
  Lines         170    170           
  Branches       54     54           
=====================================
  Hits          170    170

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e11cc02...cdd7da9. Read the comment docs.

[philquinn]

@erikras can we get this merged as soon as possible? We have downstream dependencies using the latest version 3.1.1

[erikras]

Published in v3.1.2.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.