update
udpate
updae
add linkkit docs
update linkkit manual
Merge branch 'master' of https://github.com/Shaofa/AliOS-Things-Certification-Manual.wiki
Updated Manual Channel (markdown)
Created _Footer (markdown)
api -> kernel
Updated Docs Network (markdown)
Updated Docs Channel (markdown)
Updated Docs uMesh (markdown)
Updated Manual FOTA (markdown)
增加coap通道测试规范
增加wsf通道测试规范
添加mqtt测试规范
Updated _Sidebar (markdown)