updating readme.

README.md

@@ -26,6 +26,26 @@ CometChat React Native Chat UI Kit is a collection of custom **UI Components** d
 
 ---
 
+
+## Features
+- Private(1-1) & Group Conversations
+- Voice & video calling & conferencing
+- Rich Media Attachments
+- Typing Indicators
+- Text, Media and Custom messages
+- Read receipts
+- Online Presence Indicators
+- Message History
+- Users & Friends List
+- Search by users and groups
+- Groups List
+- Conversations List
+- Threaded Conversations
+
+
+ ## Extensions
+
+ [Thumbnail Generation](https://prodocs.cometchat.com/docs/extensions-thumbnail-generation) | [Link Preview](https://prodocs.cometchat.com/docs/extensions-link-preview) | [Rich Media Preview](https://prodocs.cometchat.com/docs/extensions-rich-media-preview) | [Smart Reply](https://prodocs.cometchat.com/docs/extensions-smart-reply)| [Emojis](https://prodocs.cometchat.com/docs/extensions-emojis) | [Polls](https://prodocs.cometchat.com/docs/extensions-polls) | [Reactions](https://prodocs.cometchat.com/docs/extensions-reactions) | [Stickers](https://prodocs.cometchat.com/docs/extensions-stickers)
 ## Prerequisites
 
 Before you begin, ensure you have met the following requirements: