diff --git a/README.md b/README.md
index 35dd8a4..37857e7 100644
--- a/README.md
+++ b/README.md
@@ -4,16 +4,44 @@
 Tested with debian 9 and ubuntu 16.04.
 
 
-## example usage
+## requirements
 
-```
-certbot certonly --dry-run --manual --preferred-challenges=dns --manual-auth-hook [path to this repositry]/certbot-dns-auth.py -d example.com
-```
-
-A file `conf.cfg` with inwx settings must e exist like:
+A file `conf.cfg` with inwx settings must e exist in the repository root folder like:
 ```
 [live]
 url = https://api.domrobot.com/xmlrpc/
 username = [USERNAME]
 password = [PASSWORD]
+shared_secret = your_shared_secret
+```
+
+## example usage
+
+### command line
+
+```
+certbot certonly --manual --server https://acme-v02.api.letsencrypt.org/directory --preferred-challenges=dns --manual-auth-hook [path to this repositry]/certbot-dns-auth.py  --manual-cleanup-hook [path to this repositry]/certbot-dns-clean.py -d example.com -d *.example.com
+```
+
+### with config file
+
+`wildcard-ini`:
+
+```
+email = [YOUR@EMAIL.com]
+cert-name = [USERNAME]
+rsa-key-size = 4096
+
+server = https://acme-v02.api.letsencrypt.org/directory
+authenticator = manual
+manual-auth-hook = [path to this repositry]/certbot-dns-auth.py
+manual-cleanup-hook = [path to this repositry]/certbot-dns-clean.py
+
+domains = example.com, *.example.com
+```
+
+Command: 
+
+```
+certbot certonly -c wildcard-ini
 ```