README.md in dbox-0.4.0 vs README.md in dbox-0.4.1

@@ -190,9 +190,15 @@
 
 ```ruby
 Dbox.move(new_remote_path, local_path)
 ```
 
+#### Check whether a Dropbox DB file is present
+
+```ruby
+Dbox.exists?(local_path)
+```
+
 #### Example
 
 ```sh
 $ export DROPBOX_APP_KEY=cmlrrjd3j0gbend
 $ export DROPBOX_APP_SECRET=uvuulp75xf9jffl