Adding createBlob
Merge
Fix UT
Remove code duplicate
Rename chunkStream
Fix signature
Add statusCode and requestId to the error object
Emmitting error events
Removing duplicate error events
Add UT and missing close event
Merge
Fix jsHint error
Apply review comments
Add disclaimer about the new APIs
Merge pull request #1030 from andrerod/createBlockBlob2

Add createBlob operation