update documentation

Author: suquant

README.md

@@ -4,6 +4,29 @@
 
 * Scale hosts without restart of whole interface
 
+## Interfaces
+
+### Input variables
+
+* count - count of connections
+* connections - public ips where applied
+* private_ips - ips for wireguard communication
+* interface - wireguard interface name (default: wg0)
+* port - wireguard port (default: 51820)
+* network_cidr - network cidr (default: 10.0.1.0/24)
+* keys_dir - local directory where wireguard private keys will be stored (default: .wgkeys)
+
+### Output variables
+
+* public_ips - public ips of instances/servers
+* ips - wireguard/vpn ips of instances/servers
+* systemd_unit - wireguard systemd unit name (example: wg-quick@wg0.service)
+* network_route_systemd_unit - network route systemd unit name (example: wg0-network-route.service)
+* interface - wireguard interface name (example: wg0)
+* port - wireguard port
+* network_cidr - netowrk cidr
+
+
 ## Example
 
 ```
@@ -24,7 +47,7 @@ module "provider" {
 }
 
 module "wireguard" {
-  source = ".."
+  source = "git::https://github.com/suquant/tf_wireguard.git?ref=v1.0.0"
 
   count       = "${var.hosts}"
   connections = "${module.provider.public_ips}"