The Download Zip link yields a file that cannot be opened by WinZip 10.0 on Windows 8.1 here.
First this error is shown.
WinZip
Could not open C:\Temp\ContinuousTests-master.zip.
Probable cause: file sharing or file permissions problem.
OK Help
Then after clicking OK in that popup this is shown.
WinZip
The WinZip Wizard cannot open this file; it does not appear to be a valid archive. If you downloaded this file, try downloading it again. If you want to add the file to an archive, first create or open the archive, then drop the file again.
OK Help
Then the whole thing just fails and the WinZip wizard continues but the file is not accessible...
So that seems like something is broken, IMHO.
HTH.
Thanks.
-- Mark Kamoski