Just noticed that if you download using ZIP, you will get a folder called FiveSecondRule-master, which if you simply drag into your addons folder will not be recognized. Perhaps it would be useful to add a note in the readme telling people to remove the branch name, -master, if they get the addon in this way.

Not really much I can do about that, since that is how GitHub packages the files :/ You can install it using the Twitch App for automatic updates if you like.

Agree with @theteapot, I ran into this issue too. I think adding some quick installation instructions to the README.md will resolve this point of friction.