This is a plugin for Emby server. If you do not already have Emby server installed please go to emby.media and download the server. Otherwise this plugin will be very useless for you.
When you build the project it will copy the dll to the Emby server plugin folder (%appdata%/Emby-Server/Plugins). Just restart Emby after you build and you should see the plugin installed. If not, check the copy command or copy the dll yourself.
Copy the dll file into the "%appdata%/Emby-Server/Plugins" folder, restart your Emby server and the new plugin should be visible.
Copy the dll file into the "/var/lib/emby-server/plugins" folder, set emby as the Group:Owner, restart your Emby server and the new plugin should be visible.