使用$user=new Model('user');实例化时，
错误：
Class 'Home\Controller\Model' not found
ThinkPHP3.2.1 { Fast & Simple OOP PHP Framework } -- [ WE CAN DO IT JUST THINK ]
<?php
namespace Home\Model;
use Think\Model;
class userModel extends Model{
}
实例化： $user=new \Home\Model\userModel();