Update README.md

Author: tabuna

README.md

@@ -2,9 +2,6 @@
 
 [![run-tests](https://github.com/sajya/client/actions/workflows/run-tests.yml/badge.svg)](https://github.com/sajya/client/actions/workflows/run-tests.yml)
 
->  **Warning**.   
-> This package is still under development and is not recommended for use in production.
-
 This package lets you set up a JSON-RPC client over HTTP(S), using your PHP code to make the requests. Built
 around [Laravel](https://laravel.com/docs/8.x/http-client#introduction) expressive HTTP wrapper, it allows you to
 customize things like authorization, retries, and more.