Update README.md

Author: zgldh

README.md

@@ -42,7 +42,7 @@
 
 ## 安装
 
- - ```composer require zgldh/qiniu-laravel-storage```
+ - ```composer require zgldh/qiniu-laravel-storage:0.10.3```
  - ```config/app.php``` 里面的 ```providers``` 数组， 加上一行 ```zgldh\QiniuStorage\QiniuFilesystemServiceProvider::class```
  - ```config/filesystem.php``` 里面的 ```disks```数组加上：