title: (Flutter) Paytm Payment Gateway integration
body: <p>I am building a flutter app which involves online payment from users of app. </p>
  
  <p>I am planning to use Paytm payment gateway. I was planning to achieve this using WebView. I understand that for this I need to set up a server to generate checksum.</p>
  
  <p>Now what I want to understand is how do I set up the server?
  According to this article: <a href="https://medium.com/@iqan/flutter-payments-using-paytm-7c48539dfdee" rel="nofollow noreferrer">https://medium.com/@iqan/flutter-payments-using-paytm-7c48539dfdee</a>
  I have to clone this github project: <a href="https://github.com/iqans/paytm-checksum-api-nodejs" rel="nofollow noreferrer">https://github.com/iqans/paytm-checksum-api-nodejs</a></p>
  
  <p>Where do I upload this node.js project? Can this be uploaded to Firebase?</p>
  
  <p>Or does it have to be uploaded on website hosting platform like hostgator? </p>
  
  <p>Please explain this a bit, I don't now much about servers, I have just started using flutter.</p>