Update README with new install instructions

README.md

@@ -9,6 +9,15 @@ Install using `pip`:
 $ pip install gwlf-e
 ```
 
+For Linux x64 on Python 3.8, 3.9, and 3.10 the above will pull a published wheel.
+For other platforms, a wheel would have to be built.
+In that case, you may also need to install `setuptools`, `wheel`, and `build` to compile it locally:
+
+```bash
+$ pip install wheel build
+$ pip install --no-build-isolation gwlf-e
+```
+
 ## Development
 
 Ensure you have Python 3.10 and [pipenv](https://pipenv.pypa.io/en/latest/) available. Then run: