fix：1、删除上一个sdk，更换新的。2、删除了max广告

Assets/ThinkupTpnPlugin/AnyThinkAds/Api/ATDownloadManager.cs

@@ -0,0 +1,36 @@
+
+using AnyThinkAds.Common;
+
+
+namespace AnyThinkAds.Api
+{
+    public class ATDownloadManager
+    {
+        private static readonly ATDownloadManager instance = new ATDownloadManager();
+        private IATDownloadClient client;
+
+        private ATDownloadManager()
+        {
+            client = GetATDownloadClient();
+        }
+
+        public static ATDownloadManager Instance
+        {
+            get
+            {
+                return instance;
+            }
+        }
+
+		public void setListener(ATDownloadAdListener listener)
+        {   
+            client.setListener(listener);
+        }
+
+        public IATDownloadClient GetATDownloadClient()
+        {
+            return AnyThinkAds.ATAdsClientFactory.BuildDownloadClient();
+        }
+
+    }
+}