server.js

var express = require('express');

//Create our App
var app = express();
//set enviornment variable, if there isn't one (aka locally) use 3000
const PORT = process.env.PORT || 3000;
//reroute all https traffic to http using express midleware
app.use(function (req, res, next) {
  if (req.headers['x-forwarded-proto'] === 'https') {
    res.redirect('http://' + req.hostname + req.url);
  } else {
    next(); //lets request process as normal
  }
});
//tell it which folder we want to serve
app.use(express.static('public'));
//start the server
app.listen(PORT, function() {
  console.log('Express Server is up on port ' + PORT);
});