added extension link

README.md

@@ -17,6 +17,14 @@ I'm so fucking tired of retards recommending libraries that are so easily detect
 ## Installation
 Install the 4play extension on a **CLEAN** Firefox install. Do **NOT** use your main profile, it will mess up your tabs and containers. Enter credentials in the extension and connect.
 
+Just go get the extension on the [Firefox store](https://addons.mozilla.org/en-US/firefox/addon/4play/), or run it for development like so:
+
+```sh
+npm install --global web-ext
+cd ext
+web-ext run # this will launch a new firefox instance
+```
+
 Then, start the server:
 ```bash
 cd server