If you go to the current version and open up the bin > release folder, you'll get a ZIP file containing the relevant files as well as a Word document called RedisService.docx with the following instructions:
Installing the Service --service-install
This must be the first argument on the redis-server command line. Arguments after this are passed in the order they occur to Redis when the service is launched. The service will be configured as Autostart and will be launched as "NT AUTHORITY\NetworkService". Upon successful installation a success message will be displayed and Redis will exit. This command does not start the service.
For instance: