Update server.js

Change request header ipaddress.

Author: Kimani Maina

server.js

@@ -28,7 +28,7 @@ app.get("/api/hello", function (req, res) {
 
 app.get('/api/whoami', (req, res) => {
  res.json({
- ipaddress: req.ip,
+ ipaddress: req.headers['x-forwarded-for'].split(',')[0],
  language: req.headers['accept-language'],
  software: req.headers['user-agent']
  })