Merge pull request #1 from CocoaChina-editors/master

merge update
增加A.3-1 About the Language Reference翻译

增加A.3-1 About the Language Reference翻译
Merge pull request #48 from dabing1022/ChildhoodAndyTranslation

添加A.3-1 About the Language Reference翻译
Merge pull request #2 from CocoaChina-editors/master

合并更新