Was this QAed?
Unfortunately, this software does not work as delivered. I had to kill the process in order to get out of the program as there is no “Cancel” option, just “Grant access…”, in the modal dialog. Xcode 6 has its docsets installed in "Contents > Developer > Documentation > DocSets”, not /Library/Shared/… as specified in this software. Needs work.
Proteus anguinus about Docs for Xcode