Merge commit '3bf0210dca67e534bf8d344575abf32e653c8407' * commit '3bf0210dca67e534bf8d344575abf32e653c8407': doc change: incorporate comments on SDK docs and structure.
Merge commit '3bf0210dca67e534bf8d344575abf32e653c8407' * commit '3bf0210dca67e534bf8d344575abf32e653c8407': doc change: incorporate comments on SDK docs and structure.