DOC: Updated readme

README.md

@@ -67,6 +67,9 @@ Variable precendence is as followed (from greatest to least,means the first list
   3. config-file
 ```
 
+### Config file
+An example config can be found in this repo (`example_config.ini`). Be aware to set the file mode of the config to `0660`.
+
 ## Examples
 More examples can be found in the [wiki article](https://git.scc.kit.edu/scc-net/net-suite/netdb-client-lib/-/wikis/examples)
 ### Basic queries