added documentation about API token usage;

Author: xellio

README.md

@@ -6,8 +6,6 @@
 [![release](https://github.com/Myra-Security-GmbH/terraform-provider-myrasec/actions/workflows/release.yml/badge.svg?branch=v1.49.0)](https://github.com/Myra-Security-GmbH/terraform-provider-myrasec/actions/workflows/release.yml)
 [![tests](https://github.com/Myra-Security-GmbH/terraform-provider-myrasec/actions/workflows/test.yml/badge.svg)](https://github.com/Myra-Security-GmbH/terraform-provider-myrasec/actions/workflows/test.yml)
 ## Documentation
-
-- [How-to guide](https://github.com/Myra-Security-GmbH/terraform-provider-documentation)
 - [Official documentation](https://registry.terraform.io/providers/Myra-Security-GmbH/myrasec/latest/docs)
 
 ## Requirements

docs/index.md

@@ -25,6 +25,14 @@ provider "myrasec" {
 ...
 ```
 
+In case you prefer to use the API token for authentication, you can use this token, too:
+```
+# Configure the Myra Security Provider
+provider "myrasec" {
+  api_token = "${var.myra_api_token}"
+}
+```
+
 ## Variables
 Some attributes in the resources require specific values, therefore we created a list of variables that you can import to your terraform project:
 [Variable list](variables.md)