Adds the powershell version of the alias

Co-authored-by: Guillermo Cava <gcavanunez>

README.md

@@ -35,12 +35,18 @@ On Linux or macOS, use:
 alias takeout="docker run --rm -v /var/run/docker.sock:/var/run/docker.sock -it tighten/takeout:latest"
 ```
 
-On Windows, use:
+On Windows 10, if you're using Bash, use:
 
 ```bash
 alias takeout="docker run --rm -v //var/run/docker.sock:/var/run/docker.sock -it tighten/takeout:latest"
 ```
 
+On Windows 10, if you're using PowerShell, use:
+
+```bash
+function takeout { docker run --rm -v //var/run/docker.sock:/var/run/docker.sock -it tighten/takeout:latest $args }
+```
+
 That's it. You may now use Takeout on your terminal. The first time you use this alias, it will pull the Takeout image from Docker Hub.
 
 To update the image, run `docker pull tighten/takeout` when you want to get the newest release.