app.post('/signup', (req, res) => {
  const { username, password } = req.body;
  const saltRounds = 10;
  bcrypt.hash(password, saltRounds, function (err, hash) {
    db.user.create({
      username: username,
      password: hash
    }).then((result) => {
      console.log("User created: ", result);
      res.json("user created!");
    })
  });
})