Make README.md a bit more Windows-friendly

README.md

@@ -31,13 +31,17 @@ source paios/.venv/bin/activate
 python3 -m paios
 ```
 
-_Windows_
+_Windows (PowerShell)_
 
 ```sh
 python .\paios\scripts\setup_environment.py (only on first run)
 .\paios\.venv\Scripts\Activate.ps1
 python -m paios
 ```
+**_NOTE:_** It may be necessary to set the Windows execution policy; the following command sets the policy to "Unrestricted" for the current PowerShell session only:
+```sh
+Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Scope Process
+```
 
 Visit [http://localhost:3080/](http://localhost:3080/)
 
@@ -54,12 +58,12 @@ git clone https://github.com/Kwaai-AI-Lab/paios.git
 Build the frontend:
 
 ```sh
-cd frontend
+cd paios/frontend
 npm run build
 cd ..
 ```
 
-Run the uvicorn server:
+Run the uvicorn server from the virtual environment:
 
 ```sh
 python -m paios