Merge pull request #3 from linsongze/master

唯一编辑完成
修改代码块的语法markdown
修改排版
Update alpha2.md
Update alpha2.md
Update alpha2.md
Update alpha2.md
编辑简明笔记
Create test.rst
Delete test.rst
添加代码
修改目录
修改目录
Update alpha2.md
Update alpha2.md
Update alpha2.md
Update alpha2.md