text: var express = require('express')
  
  var app = express()
  
  app.set('view engine', 'pug')
  
  app.use(express.static('public'))
  
  app.get('/', function (req, res) {
    res.render('index')
  })
  
  app.get('/signup', function (req, res) {
    res.render('index')
  })
  
  app.get('/signin', function (req, res) {
    res.render('index')
  })
  
  app.listen(3000, function (err) {
    // if (err) return console.log('Hubo un error'), process.exit(1)
    if (err) {
      console.log('Hubo un error')
      return process.exit(1)
    }
  
    console.log('Platzigram escuchando en el puerto 3000')
  })
  