Auto Generate API Token on Register

    /**
     * Create a new user instance after a valid registration.
     *
     * @param  array  $data
     * @return User
     */
    protected function create(array $data)
    {
        return User::create([
            'name' => $data['name'],
            'email' => $data['email'],
            'api_token' => str_random(40),
            'password' => bcrypt($data['password']),
        ]);
    }