//Register
router.post('/register', (req, res, next) => {
  let newUser = new User({
    name: req.body.name,
    email: req.body.email,
    username: req.body.username,
    password: req.body.password
  });

  User.findOne({
            email: req.body.email
        }, function (err, existingUser) {

            if (existingUser) {
                res.json({
                    success: false,
                    msg: 'Email is already registered'
                });
              } else {

  User.addUser(newUser, (err, user) => {
      if (err) {
        res.json({
          success: false,
          msg: 'Failed to register user'
        });
      } else {
        res.json({
          success: true,
          msg: 'User registered!'
        })
      }
    })
  }
});
})