[SKIP CI] update readme

README.md

@@ -1,2 +1,74 @@
-# ansible_iptables
+# xoxys.iptables
+  
+[![Build Status](https://drone.rknet.org/api/badges/ansible/xoxys.iptables/status.svg)](https://drone.rknet.org/ansible/xoxys.iptables)
 
+
+Rule to manage iptables
+
+## Table of content
+
+* [Default Variables](#default-variables)
+  * [iptables_default_head](#iptables_default_head)
+  * [iptables_default_tail](#iptables_default_tail)
+  * [iptables_custom_rules](#iptables_custom_rules)
+  * [iptables_keep_unmanaged](#iptables_keep_unmanaged)
+* [Dependencies](#dependencies)
+* [License](#license)
+* [Author](#author)
+
+---
+
+## Default Variables
+
+### iptables_default_head
+
+Default head (allow) rules.
+
+#### Default value
+
+```YAML
+iptables_default_head: "-P INPUT ACCEPT\n-P FORWARD ACCEPT\n-P OUTPUT ACCEPT\n-A INPUT\
+  \ -m state --state RELATED,ESTABLISHED -j ACCEPT\n-A INPUT -i lo -j ACCEPT\n-A INPUT\
+  \ -p icmp --icmp-type echo-request -j ACCEPT\n-A INPUT -p tcp -m tcp --dport 22\
+  \ -j ACCEPT\n"
+```
+
+### iptables_default_tail
+
+Default tail (deny) rules.
+
+#### Default value
+
+```YAML
+iptables_default_tail: "-A INPUT -j REJECT\n-A FORWARD -j REJECT\n"
+```
+
+### iptables_custom_rules
+
+#### Default value
+
+```YAML
+iptables_custom_rules: []
+```
+
+### iptables_keep_unmanaged
+
+By default this role deletes all iptables rules which are not managed by Ansible. Set this to 'yes', if you want the role to keep unmanaged rules.
+
+#### Default value
+
+```YAML
+iptables_keep_unmanaged: no
+```
+
+## Dependencies
+
+None.
+
+## License
+
+MIT
+
+## Author
+
+xoxys