add README information

add information to the README file
Remove unused variables

README.md

+# Ansible role to deploy apache on debian
+
+## Requirement
+
+You need a debian OS (tested on debian 10)
+
+## Variables (in defaults)
+
+* apache_listen_ips - default value:
+  * 0.0.0.0:80
+  * 0.0.0.0:443
+* apache_remove_default_vhost - default value: false
+* apache_mods_enabled - default value:
+  * rewrite
+  * ssl
+* apache_extra_mods_enabled - default value: empty list
+* apache_mods_disabled - default value: empty list
+* apache_state - default value: started
+* apache_service - default value: apache2
+* apache_server_root - default value: /etc/apache2
+* apache_conf_path - default value: /etc/apache2
+* apache_default_vhost_filename - default value: 000-default.conf
+* apache_packages - default value:
+  * apache2
+  * apache2-utils
+* apache_extr_packages - default value: empty list
+
+
+## Example playbook
+
+
+## role philosophy

defaults/main.yml

 
 apache_state: started
 apache_service: apache2
-apache_daemon: apache2
-apache_daemon_path: /usr/sbin/
 apache_server_root: /etc/apache2
 apache_conf_path: /etc/apache2
 apache_default_vhost_filename: 000-default.conf