Added powershell note to README.

Author: rubenthoms

CHANGELOG.md

@@ -12,7 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#528](https://github.com/equinor/webviz-config/pull/528) - Implemented `initiallyCollapsed` setting for groups in menu.
 
 ### Changed
-- [#545](https://github.com/equinor/webviz-config/pull/545) - Replaced `cp` with `copyfiles` in `package.json`'s `postinstall` script.
+- [#545](https://github.com/equinor/webviz-config/pull/545) - Replaced `cp` with `copyfiles` in `package.json`'s `postinstall` script and added note to `README`.
 
 ## [0.3.5] - 2021-10-08
 

README.md

@@ -56,6 +56,11 @@ npm ci --ignore-scripts && npm run postinstall
 pip install -e .
 ```
 
+NOTE: If you are on Windows, make sure to first set `npm`'s default `script-shell` to `powershell`.
+```
+npm config set script-shell powershell
+```
+
 After installation, there is a console script named `webviz` available. You can test the
 installation by using the provided example configuration file,
 ```bash