📖 DOC: update README.md

Author: mhmdio

README.md

@@ -1,7 +1,42 @@
 # terraform-aws-sso
 
-## Requirements/Assumptions
+## Assumptions
 
 - AWS ORG created, with SSO enabled.
-- AWS SSO enabled in target Account.
+- AWS SSO enabled.
 - AWS SSO Group is created.
+
+## Requirements
+
+| Name      | Version   |
+| --------- | --------- |
+| terraform | >= 0.14.0 |
+| aws       | >= 3.24.0 |
+
+## Providers
+
+| Name | Version   |
+| ---- | --------- |
+| aws  | >= 3.24.0 |
+
+## Inputs
+
+| Name                 | Description                                                                                                                | Type          | Default                                   | Required |
+| -------------------- | -------------------------------------------------------------------------------------------------------------------------- | ------------- | ----------------------------------------- | :------: |
+| description          | (Optional) The description of the Permission Set.                                                                          | `string`      | `""`                                      |    no    |
+| group\_display\_name | The group's display name value                                                                                             | `string`      | n/a                                       |   yes    |
+| managed\_policy\_arn | describe your variable                                                                                                     | `string`      | n/a                                       |   yes    |
+| name                 | (Required, Forces new resource) The name of the Permission Set.                                                            | `string`      | n/a                                       |   yes    |
+| relay\_state         | (Optional) The relay state URL used to redirect users within the application during the federation authentication process. | `string`      | `null`                                    |    no    |
+| session\_duration    | (Optional) The length of time that the application user sessions are valid in the ISO-8601 standard. Default: PT1H.        | `string`      | `"PT1H"`                                  |    no    |
+| tags                 | (Optional) Key-value map of resource tags.                                                                                 | `map(string)` | <pre>{<br>  "Terraform": "Yes"<br>}</pre> |    no    |
+| target\_id           | (Required, Forces new resource) An AWS account identifier, typically a 10-12 digit string.                                 | `string`      | n/a                                       |   yes    |
+
+## Outputs
+
+| Name                    | Description |
+| ----------------------- | ----------- |
+| account\_ids            | n/a         |
+| account\_names          | n/a         |
+| identity\_store\_id     | n/a         |
+| ssoadmin\_instance\_arn | n/a         |