Cross platform package.json (#546)

Author: rubenthoms

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 - [#539](https://github.com/equinor/webviz-config/pull/539) - Support using OAuth behind proxy. If silent refresh of OAuth token fails, fall back to loud refresh of token instead of raising internal server error.
 - [#550](https://github.com/equinor/webviz-config/pull/550) - Change user data directory on Windows from `Application Data` to `AppData` (both work on Windows 10, but only the latter works on Windows 11).
+- [#546](https://github.com/equinor/webviz-config/pull/546) - Replaced `cp` with `copyfiles` in `package.json`'s `postinstall` script and added note to `README`.
 
 ## [0.3.6] - 2021-11-08
 

README.md

@@ -52,7 +52,10 @@ can do something along the lines of:
 ```bash
 git clone git@github.com:equinor/webviz-config.git
 cd ./webviz-config
-npm ci --ignore-scripts && npm run postinstall
+npm ci --ignore-scripts
+# NOTE: If you are on Windows, make sure to first set `npm`'s default `script-shell` to `powershell` by running
+# npm config set script-shell powershell
+npm run postinstall
 pip install -e .
 ```