更新翻译完成的文章2篇
占坑#10-1 Data Synchronization

by 郭中强
Issue 9 String Localization completed
Merge branch 'master' of github.com:answer-huang/objcio_cn
add objective-c syntax highlight
占坑Issue #10 的 A Sync Case Study

by 杨超 due:3.16
add issue 8
Update Issue #8 Quadcopter Project.md
Update Issue #8 Quadcopter Project.md
Merge pull request #9 from weekwood/master

add issues #8 from page to md
recovery
完成 A Networked Core Data Application
Merge branch 'master' of https://github.com/answer-huang/objcio_cn

# By Di Wu (2) and others
# Via FangYiXiong (1) and YCFlame (1)
* 'master' of https://github.com/answer-huang/objcio_cn:
  recovery
  Update Issue #8 Quadcopter Project.md
  Update Issue #8 Quadcopter Project.md
  add issue 8
Merge pull request #8 from migrant/master

翻译完成 issue#3-custom-controls