使用yii2 安装了这个扩展 https://github.com/hguenot/yii2-gftp，可里面很多错误，修改了，想提交到github.com，如何操作。
已经fork了一个g9901/yii2-gftp，然后把 yii2项目的 basic/composer.json 对应的require 改为了g9901/yii2-gftp，可更新 composer update g9901/yii2-gftp -vvv，却所有的全部都更新了。而且，到最后还是无法更新这个组件，提示如下：
Problem 1
- The requested package g9901/yii2-gftp could not be found in any version, t
here may be a typo in the package name.
Potential causes:
- A typo in the package name
- The package is not available in a stable-enough version according to your min
imum-stability setting
see <https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion> f
or more details.
Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further commo
n problems.
D:\website\flxx2\basic>
先fork他的仓库，然后在fork的仓库修改，再提交Pull Request。或者直接像作者要修改的权限。