Update Readme.md

Readme.md

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 ## ExtentReports 5 [![Join the chat at https://gitter.im/anshooarora/extentreports](https://badges.gitter.im/anshooarora/extentreports.svg)](https://gitter.im/anshooarora/extentreports?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![Maven Central](https://img.shields.io/maven-central/v/com.aventstack/extentreports.svg?maxAge=300)](http://search.maven.org/#search|ga|1|g:"com.aventstack") [![Build Status](https://github.com/extent-framework/extentreports-java/actions/workflows/maven.yml/badge.svg)](https://github.com/extent-framework/extentreports-java/actions/workflows/maven.yml) [![CodeFactor](https://www.codefactor.io/repository/github/extent-framework/extentreports-java/badge)](https://www.codefactor.io/repository/github/extent-framework/extentreports-java) [![codecov](https://codecov.io/gh/extent-framework/extentreports-java/branch/master/graph/badge.svg)](https://codecov.io/gh/extent-framework/extentreports-java)
 
-### Documentation ###
+### Deprecation Notice
+
+ExtentReports is being sunset and will be replaced by [ChainTest Framework](https://github.com/anshooarora/chaintest). 
+
+I am incredibly grateful for the support, contributions, and trust you have placed in ExtentReports throughout this journey. 
+
+Thank you for being an integral part of the ExtentReports community. I look forward to continuing this journey with you through ChainTest.
+
+/ Anshoo
+
+### Documentation
 
 Documentation for ExtentReports 5.x and lower versions is hosted on [ExtentReports.com](http://extentreports.com)
 
-### Samples ###
+### Samples
 
 * [Klov](http://klov.herokuapp.com)
 * [Spark](http://extentreports.com/docs/v5/wiki/spark/spark.html) from [Wiki:A Complete Example](https://github.com/extent-framework/extentreports-java/wiki/A-Complete-Example)
 
-### Contributing ###
+### Contributing
 
 For more information on contributing to the ExtentReports project, please see [CONTRIBUTING.md](https://github.com/extent-framework/extentreports-java/blob/master/Contributing.md).
 
 A complete list of contributors since ExtentReports migrated from [@anshooarora/extentreports-java](https://github.com/anshooarora/extentreports-java) can be [found here](https://github.com/extent-framework/extentreports-java/graphs/contributors).
 
-### Upcoming ###
+### Upcoming
 
 * See [v5.0.x milestones](https://github.com/extent-framework/extentreports-java/milestone/2)
 * See [v5.1.x milestones](https://github.com/extent-framework/extentreports-java/milestone/3)
 * Want to see a feature added? Let me know [here](https://github.com/extent-framework/extentreports-java/issues?q=is%3Aopen+is%3Aissue+milestone%3A5.0.x)
 
-### Versions ###
+### Versions
 
 * ExtentReports 4.x is available from the [4.x branch](https://github.com/extent-framework/extentreports-java/tree/4.1.x)
 * ExtentReports 3.x is no longer maintained, and is available from [@anshooarora/extentreports-java](https://github.com/anshooarora/extentreports-java)
 
-### License ###
+### License
 
 ExtentReports is Open Source software and ExtentReports 5.0 is released under Apache-2.0.