Readme updates (#842)

* Update readme

* Add azure quantum python link

* update readme

* use https

README.md

@@ -1,4 +1,16 @@
-# Microsoft Quantum Development Kit Samples
+## DEPRECATION NOTICE
+
+**This repository is deprecated.** 
+
+For the Modern QDK repository, please visit [Microsoft/qsharp](http://github.com/microsoft/qsharp).
+
+For samples that use the Azure Quantum Python package, please visit the [Azure Quantum Python repository](https://github.com/microsoft/azure-quantum-python).
+
+You can also try out the Modern QDK in VS Code for Web at [vscode.dev/quantum](https://vscode.dev/quantum).
+
+For more information about the Modern QDK and Azure Quantum, visit [https://aka.ms/AQ/Documentation](https://aka.ms/AQ/Documentation).
+
+## Classic QDK ##
 
  [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/Microsoft/Quantum/⭐binder?urlpath=tree)