using variables for domain and guid to run added to readme

ansible/README.md

@@ -9,5 +9,11 @@ This playbook comes with three roles
 To see more info see docker-compose, tasks and config files 
 I will try to make this readme better
 
-
-> Replace status.yoursite with your domain name
+## To run it
+1. run `ansible-galaxy install -r ansible-requirements.yml` to get requirements
+2. prepare inventory hosts
+3. to run playbook
+```bash
+ansible-playbook ./playbook.yml -i <your inventory path> --extra-vars "kuma_domain=<uptime kuma domain>"
+```
+you can use other ansible playbook options too