Added config section to README.md

Author: null93

README.md

@@ -136,3 +136,13 @@ sso_region = us-east-1
 sso_registration_scopes = sso:account:access
 sso_start_url = https://d-0000000000.awsapps.com/start
 ```
+
+## Configuration File
+
+The Knox config file is located at `~/.aws/knox/config.yaml`. Below are the configuration options available:
+
+| Option                | Default | Description                                                                                            |
+|-----------------------|---------|--------------------------------------------------------------------------------------------------------|
+| `default_connect_uid` | `0`     | Default user ID for SSM sessions initiated with the `knox connect` command.                            |
+| `max_items_to_show`   | `10`    | Maximum number of items to display when listing profiles or options.                                   |
+| `select_cached_first` | `false` | When selecting credentials, specifies whether to default to showing the cached role credentials first. |