title: Automatic response when file is added to folder (Dropbox API)
body: <p>So once the User has been authenticated and given an access token, </p>
  
  <p>I want the user to be able to externally add a file into a Dropbox folder for example:
  the user goes to dropbox.com, logs in and adds a new file called Dogs.png to a folder called Dogs</p>
  
  <p>Then I want use the Dropbox API to somehow tell by backend that a file has been added to the folder Dogs, and then send some information about that file (e.g. filename) to the client.</p>
  
  <p>This is a very conceptual post i'm quite new to these technologies, what's the best way to handle this problem, or am I thinking about it the right way?</p>