Update README.md

Author: tbarbugli

README.md

@@ -2,7 +2,9 @@
 
 [![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)
 
-stream-chat-python is the official Python client for [Stream chat](https://getstream.io/chat/).
+stream-chat-python is the official Python client for [Stream chat](https://getstream.io/chat/) a service for building chat applications.
+
+You can sign up for a Stream account at https://getstream.io/chat/get_started/.
 
 ### Installation
 
@@ -26,12 +28,15 @@ TODO: add a sample Python chat program
 
 ### Supported features
 
-- Chat channels and messages 
+- Chat channels 
+- Messages
 - Chat channel types 
 - User management 
 - Moderation API 
 - Push configuration 
 - User devices 
+- User search
+- Channel search
 
 ### Contributing