terraform-docs: Update

README.md

@@ -4,6 +4,34 @@ A simple module to download files distributed via npm.
 
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+## Requirements
+
+| Name | Version |
+|------|---------|
+| terraform | >= 0.13 |
+| external | >= 1.2.0 |
+
+## Providers
+
+| Name | Version |
+|------|---------|
+| external | >= 1.2.0 |
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| cdn\_provider\_url | The service that should be used for unpacking. jsdelivr or unpkg should work. | `string` | `"https://cdn.jsdelivr.net/npm/"` | no |
+| module\_name | The name of the npm module. | `string` | n/a | yes |
+| module\_version | If you want a specific version (or semver range) of the module define it here. | `string` | `""` | no |
+| path\_to\_file | The path inside of the npm module to the file you want to download. | `string` | n/a | yes |
+| use\_local | Fallback for using node.resolve for getting the module locally. Usually used for debug. | `bool` | `false` | no |
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| abs\_path | The absolute path to the downloaded file on the local file system. |
 
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