minor config change

README.md

@@ -89,7 +89,7 @@ And now run the playbook.
 
 ## run the playbook
 1. Change directory: ``cd /opt/otree/otree-ansible/``
-2. Run: ``ansible-playbook site.yml``
+2. Run: ``ansible-playbook site.yml --ask-become-pass``
 
 ## FAQ
 

group_vars/otree_servers.yml.example

 ---
 ansible_user: "mylinuxuser"
-ansible_become_pass: "mysecretpw"
 ansible_connection: "local"
 
 nginx_config_path: "/etc/nginx"