Update Sort.md

增加一个代码案例。
Update Fprintln.md

修改错误：io.Stdout改为os.Stdout
Update Fscan.md

修改io.Stdin错误，增加error的输出测试。
Merge pull request #124 from lzmuhioin/patch-4

Update Fscan.md
Merge pull request #123 from lzmuhioin/patch-3

Update Fprintln.md
Update todo.md
Update Fscanf.md

修改io.Stdin错误，为os.Stdin
Update Fscanln.md

修复 io.Stdin错误，改为os.Stdin
Merge pull request #125 from SnowWee/patch-1

Update todo.md
Merge pull request #126 from lzmuhioin/patch-5

Update Fscanf.md
Merge pull request #127 from lzmuhioin/patch-6

Update Fscanln.md
更新了结构
seach待完成
更新Readme
Create ServeFile.md
Create SetCookie.md
Merge pull request #131 from qinglong1983/patch-22

Create SetCookie.md
Merge pull request #128 from fugr/master

更新
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