Electron not using updated css file
<p>I am using electron for making an app . Till Now I was able to load my css file (updated version) . But suddenly I have found that if I make any change in my css file , the changes are no longer reflected in electron . Similar thing was happening in case wjen I used to run same thing in Chrome browser but I got it working by clearing cache . 
I think clearing cache in electron might help me as well but I dont know how can I do that . 
I got this piece of code from somewhere , but I dont know how to use this :( </p>

<pre><code>var remote = require('remote'); 
var win = remote.getCurrentWindow();
win.webContents.session.clearCache(function(){
//some callback.
}
</code></pre>

<p>Can some one guide me on how can I rectify my problem . </p>

<p><strong>UPDATED :</strong> </p>

<pre><code>const electron = require('electron');
const app = electron.app;  
const BrowserWindow = electron.BrowserWindow;  
var mainWindow = null;

app.on('window-all-closed', function() {
app.quit();
 });


 app.on('ready', function() {
 var subpy = require('child_process').spawn('python', ['./index.py']);

 var rq = require('request-promise');
 var mainAddr = 'http://localhost:5000';

var openWindow = function(){
mainWindow = new BrowserWindow({width:1200, height: 700});

mainWindow.loadURL('http://localhost:5000');
mainWindow.webContents.openDevTools();
mainWindow.on('closed', function() {
  mainWindow = null;
  subpy.kill('SIGINT');
  });
};

var startUp = function(){
rq(mainAddr)
  .then(function(htmlString){
    console.log('server started!');
    openWindow();
  })
  .catch(function(err){
    startUp();
  });
 };

startUp();
});
</code></pre>