Fix correct path

README.md

@@ -17,11 +17,11 @@ If you have checked out as the same level as sitespeed.io you run it like this (
 git clone https://github.com/sitespeedio/sitespeed.io.git
 cd sitespeed.io
 npm install
-bin/sitespeed.js --plugins.add ../plugin-webpagetest/ https://www.sitespeed.io/ -n 1 --webpagetest.key YOUR_KEY
+bin/sitespeed.js --plugins.add ../plugin-webpagetest/index.js https://www.sitespeed.io/ -n 1 --webpagetest.key YOUR_KEY
 ```
 
 ## Run in production
 If you want to run WebPageTest with your other sitespeed.io test, follow the instructions in the [add a plugin docs](https://www.sitespeed.io/documentation/sitespeed.io/plugins/#add-a-plugin) or use the sitespeed.io-webpagetest container. Read the [documentation](https://www.sitespeed.io/documentation/sitespeed.io/webpagetest/).
 ## sitespeed.io version
 
-You need sitespeed.io 16.0 or later to run the plugin.
+You need sitespeed.io 27.0 or later to run the plugin.