Update README.md

Adding deploy-to-azure button

Author: fosteramanda

use-cases/agents/setup/basic-setup/README.md

@@ -16,6 +16,8 @@ All agents created in this project will automatically use Microsoft managed, mul
 
 1. To deploy this template, click the "Deploy to Azure" button or you can run one of the following commands:
 
+[![Deploy To Azure](https://raw.githubusercontent.com/Azure/azure-quickstart-templates/master/1-CONTRIBUTION-GUIDE/images/deploytoazure.svg?sanitize=true)](https://portal.azure.com/#create/Microsoft.Template/uri/https%3A%2F%2Fraw.githubusercontent.com%2Fazure-ai-foundry%2Ffoundry-samples%2Frefs%2Fheads%2Fmain%2Fuse-cases%2Fagents%2Fsetup%2Fbasic-setup%2Fbasic-setup.json)
+
 
 * Create new (or use existing) resource group: