Update README.md

README.md

@@ -155,6 +155,7 @@ protected void onCreate(Bundle savedInstanceState) {
 -keep class **$$DownloadListenerProxy{ *; }
 -keep class **$$UploadListenerProxy{ *; }
 -keep class **$$DownloadGroupListenerProxy{ *; }
+-keep class **$$DGSubListenerProxy{ *; }
 -keepclasseswithmembernames class * {
     @Download.* <methods>;
     @Upload.* <methods>;