Dodane REST API do ARM

Author: kamil-mrzyglod

README.md

@@ -60,6 +60,7 @@ Jak zrobić PR?
 ### Azure Resource Manager (ARM)
 - [Struktura szablonów ARM](https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-authoring-templates)
 - [Definicje zasobów Azure do Azure Resource Managera](https://docs.microsoft.com/en-us/azure/templates/)
+- [Azure Resource Manager REST API](https://docs.microsoft.com/en-us/rest/api/resources/)
 
 ## Certyfikaty