Correct build badge

Author: ferhatelmas

README.md

@@ -1,6 +1,6 @@
 # stream-chat-python
 
-[![Build Status](https://travis-ci.com/GetStream/stream-chat-python.svg?token=WystDPP9vxKnwsd8NwW1&branch=master)](https://travis-ci.com/GetStream/stream-chat-python) [![codecov](https://codecov.io/gh/GetStream/stream-chat-python/branch/master/graph/badge.svg?token=DM7rr9M7Kl)](https://codecov.io/gh/GetStream/stream-chat-python) [![PyPI version](https://badge.fury.io/py/stream-chat.svg)](http://badge.fury.io/py/stream-chat) ![PyPI - Python Version](https://img.shields.io/pypi/pyversions/stream-chat.svg)
+[![build](https://github.com/GetStream/stream-chat-python/workflows/build/badge.svg)](https://github.com/GetStream/stream-chat-python/actions) [![codecov](https://codecov.io/gh/GetStream/stream-chat-python/branch/master/graph/badge.svg?token=DM7rr9M7Kl)](https://codecov.io/gh/GetStream/stream-chat-python) [![PyPI version](https://badge.fury.io/py/stream-chat.svg)](http://badge.fury.io/py/stream-chat) ![PyPI - Python Version](https://img.shields.io/pypi/pyversions/stream-chat.svg)
 
 the official Python API client for [Stream chat](https://getstream.io/chat/) a service for building chat applications.