mistyped docs + tweaks

README.md

@@ -16,7 +16,15 @@ $ yarn add node-ufw
 ## Usage
 ```js
 const nodeUfw = require("node-ufw");
-await nodeUfw.allow.port("192.168.0.1"); // true
+
+await nodeUfw.allow.port(6379);
+await nodeUfw.deny.port(25565, "udp");
+
+await nodeUfw.allow.address("192.168.0.1");
+await nodeUfw.deny.address("192.168.0.1", 80);
+await nodeUfw.allow.address("192.168.0.1", 6379, "udp");
+
+await nodeUfw.enable();
 ```
 
 ## LICENSE