Remove fixed hostname

Author: simonwep

README.md

@@ -38,13 +38,6 @@ app.get("/", (req, res) -> {
 app.listen(); // Will listen on port 80 which is set as default
 ```
 
-When you create an new Express instance you can add an additional host name for example, your local network:
-```java
-// Will bind the server to your ip-address
-Express app = new Express(Utils.getYourIp());
-```
-Default is localhost, so you can access, without setting the hostname, only from your local machine.
-
 # Docs:
 * [Routing](#routing)
    * [Direct](#direct)

src/main/java/express/Express.java

@@ -42,7 +42,6 @@ public class Express implements Router {
     HANDLER = new FilterLayerHandler(2);
 
     executor = Executors.newCachedThreadPool();
-    hostname = "localhost";
   }
 
   /**
@@ -258,11 +257,11 @@ public void listen(ExpressListener onStart) {
   public void listen(ExpressListener onStart, int port) {
     new Thread(() -> {
       try {
+
         // Fire worker threads
         WORKER.forEach(FilterWorker::start);
 
-        InetSocketAddress socketAddress = new InetSocketAddress(this.hostname, port);
-
+        InetSocketAddress socketAddress = this.hostname == null ? new InetSocketAddress(port) : new InetSocketAddress(this.hostname, port);
         if (httpsConfigurator != null) {
 
           // Create https server