Update README.md (#180)

Co-authored-by: Steve Wood <40241007+woodsp-ibm@users.noreply.github.com>

README.md

@@ -2,6 +2,10 @@
 
 [![License](https://img.shields.io/github/license/qiskit-community/qiskit-algorithms.svg?style=popout-square)](https://opensource.org/licenses/Apache-2.0)<!--- long-description-skip-begin -->[![Build Status](https://github.com/qiskit-community/qiskit-algorithms/workflows/Algorithms%20Unit%20Tests/badge.svg?branch=main)](https://github.com/qiskit-community/qiskit-algorithms/actions?query=workflow%3A"Algorithms%20Unit%20Tests"+branch%3Amain+event%3Apush)[![](https://img.shields.io/github/release/qiskit-community/qiskit-algorithms.svg?style=popout-square)](https://github.com/qiskit-community/qiskit-algorithms/releases)[![](https://img.shields.io/pypi/dm/qiskit-algorithms.svg?style=popout-square)](https://pypi.org/project/qiskit-algorithms/)[![Coverage Status](https://coveralls.io/repos/github/qiskit-community/qiskit-algorithms/badge.svg?branch=main)](https://coveralls.io/github/qiskit-community/qiskit-algorithms?branch=main)<!--- long-description-skip-end -->
 
+> [!WARNING]  
+> **Qiskit Algorithms is no longer officially supported by IBM**.  
+> Like any other Apache 2 licensed code, you are free to use it or/and extend it, but please be aware that it is under your own risk. 
+
 ## Installation
 
 We encourage installing Qiskit Algorithms via the pip tool (a python package manager).