adding 15.0_High_Availability_and_Scalability.md; first commit; test
updating TOC in 15.0
adding 15.1 through 15.5
adding images for 15.0 to 15.5
Merge remote-tracking branch 'mysql2cn/master'
提交个人负责翻译包的详细信息
提交第十章任务
add CB_14259
加入翻译信息

加入了姓名，负责包号，章节区间及页码区间等信息
Merge pull request #28 from mckobe23/master

add Chapter 11
Merge remote-tracking branch 'mysql2cn/master'
Merge branch 'master' of github.com:mysql2cn/manual56
加入了翻译信息

加入了姓名，负责包号，章节区间和页码区间。
Merge pull request #29 from armorzhou/master

提交第十章任务
Merge pull request #30 from sixizi/master

加入了翻译信息
Merge pull request #27 from lieyia/master

包领取信息
Merge pull request #31 from seanwwh/master

申请合并提交模板
Create Appendix_E . Limits in MySQL.md
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