title: react-image-uploader upload on submit button
body: <p>I found <a href="https://www.npmjs.com/package/react-images-uploader" rel="nofollow noreferrer">this awesome react package</a> for uploading multiple images.</p>
  
  <p>The images get uploaded to the server once they are selected from the filesystem via the browse window. What I want is to start uploading them when I press a "submit" button. So I can only see their preview, but they are not actually sent unless the button is pressed. The reason is because I have other data that I want to be sent together with the images.</p>
  
  <p>I am a beginner to React, can someone please point me if there is a way to achieve this? maybe extend the * ImagesUploader* class?</p>