Added documentation change.

blob/ChangeLog.md

blob/lib/azure/storage/blob/version.rb

common/ChangeLog.md

common/lib/azure/storage/common/version.rb

file/ChangeLog.md

file/lib/azure/storage/file/version.rb

queue/ChangeLog.md

queue/lib/azure/storage/queue/version.rb

table/ChangeLog.md

table/lib/azure/storage/table/version.rb