move Ack to top level

README.md

@@ -44,7 +44,7 @@ socket = IO.socket("http://localhost", opts);
 You can get a callback with the `Ack`:
 
 ```java
-socket.emit("foo", "woot", new Socket.Ack() {
+socket.emit("foo", "woot", new Ack() {
   @Override
   public void call(Object... args) {}
 });

src/main/java/com/github/nkzawa/socketio/client/Ack.java

@@ -0,0 +1,11 @@
+package com.github.nkzawa.socketio.client;
+
+/**
+ * Acknowledgement.
+ */
+public interface Ack {
+
+    public void call(Object... args);
+
+}
+

src/main/java/com/github/nkzawa/socketio/client/Socket.java

@@ -356,14 +356,5 @@ public class Socket extends Emitter {
         }
         return data;
     }
-
-
-    /**
-     * Acknowledgement.
-     */
-    public static interface Ack {
-
-        public void call(Object... args);
-    }
 }
 

src/test/java/com/github/nkzawa/socketio/client/ServerConnectionTest.java

@@ -188,7 +188,7 @@ public class ServerConnectionTest {
             @Override
             public void call(Object... objects) {
                 System.out.println("connect:");
-                socket.emit("ack", new Object[] {jsonData, "bar"}, new Socket.Ack() {
+                socket.emit("ack", new Object[] {jsonData, "bar"}, new Ack() {
                     @Override
                     public void call(Object... args) {
                         System.out.println(String.format("ack: %s, %s", args));