Add remarks about the new way deregister works in help and README

README.md

@@ -36,3 +36,4 @@ In case you want to stop providing a service follow these steps:
 - Make sure that no user is still deployed and _no_ feudal user data remains at your service
 - Execute the client once using: ```feudalClient deregister```
   - This will remove all your services from the backend, so they won't be shown to users anymore
+  - Also all deployments for your services will be removed in the during the deregistration

main.go

@@ -35,7 +35,7 @@ var (
 	).Version(fmt.Sprintf("feudalClient:  %s\nfeudalScripts: %s", version, scriptsVersion))
 
 	cmdStart         = app.Command("start", "Starts the client in its normal operation mode.").Default()
-	cmdDeregister    = app.Command("deregister", "Before disabling the client: Use deregister to inform the backend that the client ceases operation.")
+	cmdDeregister    = app.Command("deregister", "Before disabling the client: Use deregister to inform the backend that the client ceases operation. This also causes the removal all existing deployment for the services of this client.")
 	cmdSchema        = app.Command("schema", "Can be used to generate a JSON schema (Draft 4, see json-schema.org) for the validation of script inputs, outputs and the config of this client.")
 	printSelector    = cmdSchema.Arg("selector", "Select the schema to generate. Options: input, output, config").Required().Enum("input", "output", "config")
 	cmdValidate      = app.Command("validate", "Validate a input/output/config json. The json needs to be passed via stdin.")