function registerUser(req, res) {
  var user = new User(req.body);
  user.save((err, user) =>{
    if(err)
    {
      console.log(err)
      return res.status(409).json({
        status: '409',
        message: 'User already exists'
      })
    }
    if(!user)
    {
      return res.status(500).json({
        status: '500',
        message: 'Internal server error'
      })
    }
    else {
        // MailService.sendEmail(req.body.email, 'Account Creation for Game Changers',
        //     'Your account for game changers has been created with the following credentials:\nemail: ' + req.body.email + '\npassword: '+ req.body.password + '\nYou can login at: http://ias00nan5eba.corp.emc.com/gamechanger/');
        return res.status(200).json({

        status : '200',
        message: 'Success',
        body: user._id
      })
    }
  })
}