Updated README.md for ASE

Created steps to build and deploy on ASE.

Author: rickijen

extensions/azure-stack-edge/README.md

@@ -1,3 +1,10 @@
 # Deploy Claims API on Azure Stack Edge
 
-This project extension describes the steps for deploying the same Claims API on Azure Stack Edge.
+Steps:
+1. Create a new branch (e.g. "ase-test") on GitHub.
+2. Checkout the new branch.
+3. Rename your existing claims-api directory to **aks-aspnet-sqldb-rest/claims-api.orig**.
+4. Copy **aks-aspnet-sqldb-rest/extensions/azure-stack-edge/claims-api** to **aks-aspnet-sqldb-rest/claims-api**.
+5. Make necessary changes under "imageCredentials" in **values.yaml**.
+6. Commit and push changes to new branch.
+7. Go to the ADO project and rebuild the pipeline using the new branch (instead of master).