update changelog and readme
Update README.md

Fixing some format issues.
add some AzureRT change
add SQL changes
Merge branch 'release-0.6.16' of https://github.com/WindowsAzure/azure-sdk-tools into release-0.6.16
remove section for China support
update with feedback
Merge pull request #1669 from guangyang/release-0.6.16

Release 0.6.16