docs: add note for powershell users (#168)

README.md

@@ -1,21 +1,22 @@
 > [!IMPORTANT]
 > This project is still in it's alpha phase.
-> 
+>
 > When using it be aware that things may not yet work as expected and can
 > break at any point. Releases happen often, so when you experience problems,
 > make sure you are using the latest version (check with `npm outdated` in
 > your project) before opening an issue.
-> 
+>
 > We are still in a phase where we can easily make bigger changes, so we ask
 > you to please [provide feedback](https://github.com/visgl/react-google-maps/issues/new)
 > on everything you notice - including, but not limited to
->  - developer experience (installation, typings, sourcemaps, framework integration, ...)
->  - hard to understand concepts and APIs
->  - wrong, missing, outdated or inaccurate documentation
->  - use-cases not covered by the API
->  - missing features
->  - and of course any bugs you encounter
-> 
+>
+> - developer experience (installation, typings, sourcemaps, framework integration, ...)
+> - hard to understand concepts and APIs
+> - wrong, missing, outdated or inaccurate documentation
+> - use-cases not covered by the API
+> - missing features
+> - and of course any bugs you encounter
+>
 > Also, feel free to use [GitHub discussions](https://github.com/visgl/react-google-maps/discussions) to ask questions or start a new
 > discussion.
 
@@ -37,6 +38,9 @@ This library is available on npm as [`@vis.gl/react-google-maps`][npm-package].
 npm install @vis.gl/react-google-maps
 ```
 
+_(PowerShell users: since `@` has a special meaning in PowerShell, the
+package name has to be quoted)_
+
 ## Usage
 
 Import the [`APIProvider`][api-provider] and wrap it around all components that should have