Merge pull request #66 from aquaporcus/master

Correct typos
Update README.md
Update README.md
Update README.md
Update 22Generics.md
修正目录层次及若干翻译

修正目录层次及若干翻译
Merge pull request #67 from takalard/master

初稿翻译 22-Generics
更新目录
Update 07Attributes.md
update 02/07
Merge pull request #68 from numbbbbb/master

update 02/07 闭包
update 02/07

闭包部分校对结束
Merge pull request #3 from CocoaChina-editors/master

同步