Plugin not showing up

[theteknocat]

Sorry if I'm posting this in the wrong place, but this plugin will NOT show up for me when I go to add it. I put the files, as instructed, in the include/plugins folder in a folder called "autoclose". When I go to manage plugins and click "Add New Plugin" it tells me that any plugins found in the plugins folder folder will show up there. But it simply doesn't show up.

I'm running osTicket version 1.12. Any advice would be appreciated.