A few issues:
* The man page is in
/usr/share/man/light.1.gz instead of the expected
* The version in the man page says
0.9 (beta), but the version on the rpm says
* The man page mentions "info Light" as being the full documentation, but that isn't packaged
* In order for this to actually work, the binary either needs to be suid or udev rule need to be put in place. I suspect the udev rules are the way to go, but I'm not sure the ones listed on light's github are exactly the right way to go.