UPD: README.md

README.md

@@ -37,6 +37,35 @@ Variable precendence is as followed (from greatest to least, means the first sou
 >>> endpoint = netdb_client.APIEndpoint(**vars(args))
 >>> api = netdb_client.APISession(endpoint)
 ```
+Example help (`h` / `--help`) output:
+```
+usage: test2.py [-h] [--auth-config AUTH_CONFIG] [--base-url BASE_URL]
+                [--version VERSION] [--token TOKEN]
+
+Argument Parser for netdb_client
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --auth-config AUTH_CONFIG
+                        config file path (default: /Users/dominik/.config/netdb_client.ini)
+  --base-url BASE_URL, -b BASE_URL
+                        webapi server.
+                        Environment: "NETDB_BASE_URL"
+                        Config: [DEFAULT]: endpoint
+  --version VERSION     webapi version.
+                        Environment: "NETDB_VERSION"
+                        Config: [$endpoint]: version
+  --token TOKEN, -t TOKEN
+                        user API token.
+                        Environment: "NETDB_TOKEN"
+                        Config: [$endpoint]: token
+
+The Variables BASE_URL, VERSION and TOKEN can be loaded from config file,environment or from command line arguments.
+Variable precendence is as followed (from greatest to least,means the first listed variable overwrites all other variables):
+  1. cli-arguments
+  2. environment variables
+  3. config-file
+```
 
 ## Examples
 More examples can be found in the [wiki article](https://git.scc.kit.edu/scc-net/net-suite/netdb-client-lib/-/wikis/examples)