Update README.md

Author: taragano

README.md

@@ -125,7 +125,7 @@ Assuming you have your Cloudinary configuration parameters defined (`cloud_name`
 
 The following example uploads a local JPG to the cloud: 
 
-    cloudinary.uploader().upload("my_picture.jpg", Cloudinary.emptyMap());
+    cloudinary.uploader().upload("my_picture.jpg", ObjectUtils.emptyMap());
 
 The uploaded image is assigned a randomly generated public ID. The image is immediately available for download through a CDN: