fix reconnection option

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

@@ -80,7 +80,7 @@ public class IO {
          */
         public boolean multiplex = true;
 
-        public boolean reconnection;
+        public boolean reconnection = true;
         public int reconnectionAttempts;
         public long reconnectionDelay;
         public long reconnectionDelayMax;

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

@@ -321,7 +321,7 @@ public class Manager extends Emitter {
     private void onclose() {
         this.cleanup();
         this.readyState = ReadyState.CLOSED;
-        if (!this.skipReconnect) {
+        if (this._reconnection && !this.skipReconnect) {
             this.reconnect();
         }
     }