看了好多帖子，终于在混乱中找到自己适合的方法。。。。。。
自我感觉这个比较简单。

先安装本地git，官方下载地址：http://git-scm.com/download/  根据你自己的系统 下载对应版本。

Administrator@USER-20170816VX MINGW64 /g/project/10guang （桌面要提交的文件，右键选择git bash here）

$ git clone https://github.com/gaobing1252/web-app.git （使用仓库地址生成 web-app 目录，这个目录是在提交文件的里面，然后把文件里面要上传的内容都拷贝到生成的web-app下）

Cloning into 'web-app'...

warning: You appear to have cloned an empty repository.

Administrator@USER-20170816VX MINGW64 /g/project/10guang

$ cd web-app （继续命令到web-app，从此处开始）

Administrator@USER-20170816VX MINGW64 /g/project/10guang/web-app (master)

$ git add .  （注意这个 点 前面有空格的！）

warning: LF will be replaced by CRLF in home/home.html.

The file will have its original line endings in your working directory.

warning: LF will be replaced by CRLF in js/jquery-1.6.2.min.js.

The file will have its original line endings in your working directory.

Administrator@USER-20170816VX MINGW64 /g/project/10guang/web-app (master)

$ git commit -m "提交文件"

[master (root-commit) fb02d25] 提交文件

 93 files changed, 11020 insertions(+)

 create mode 100644 .project

 create mode 100644 css/easyLife/easyLife.css

 create mode 100644 video/video.html

 create mode 100644 "\346\226\207\346\241\243.txt"

Administrator@USER-20170816VX MINGW64 /g/project/10guang/web-app (master)

$ git remote add origin git@github.com:gaobing1252/web-app.git （origin 后面的地址是 ssh类型的，不是htttps！）

fatal: remote origin already exists.

Administrator@USER-20170816VX MINGW64 /g/project/10guang/web-app (master)

$ git push -u origin master

Username for 'https://github.com': gaobing1252 （输入用户名，之后会弹出密码输入框；验证成功自动上传）

Enumerating objects: 108, done.

Counting objects: 100% (108/108), done.

Delta compression using up to 4 threads.

Compressing objects: 100% (102/102), done.

Writing objects: 100% (108/108), 1.40 MiB | 82.00 KiB/s, done.

Total 108 (delta 8), reused 0 (delta 0)

remote: Resolving deltas: 100% (8/8), done.

To https://github.com/gaobing1252/web-app.git

 * [new branch]      master -> master

Branch 'master' set up to track remote branch 'master' from 'origin'.（成功！）


这个每次上传都要输入账号密码，还有另一种绑定秘钥的。可我生成了几次也没成功。。。。
感觉输入账号密码也不麻烦。