Updated README

README.md

@@ -1,3 +1,22 @@
 # terraform-azurerm-aks
 
-Azure Kubernetes Service (AKS) [Terraform module](https://registry.terraform.io/modules/adamrushuk/aks/azurerm/latest)
+An Azure Kubernetes Service (AKS) [Terraform module](https://registry.terraform.io/modules/adamrushuk/aks/azurerm/latest).
+
+## Used resources
+
+The main resources used are:
+
+- `azuread_group`
+- `azurerm_kubernetes_cluster`
+
+## Prereqs
+
+*This example was developed using Terraform version `0.12`.
+It may not work out-of-the-box using other versions.*
+
+This example expects you to already have
+[Terraform installed](https://learn.hashicorp.com/tutorials/terraform/install-cli).
+
+## Examples
+
+Browse the [`/examples`](examples) folder for more information.