Adding OpenSeadragon Plugin to Omeka Classic for Zoomable Images

I am using Omeka 2.4.1 and am trying to use the OpenSeadragon Omeka Plugin from DPLA to provide zoomable images. I can upload the plugin but it is not recognized as a valid plugin in the Omeka Administration panel.

Has anyone else experienced this or successfully added this plugin?

After looking at the PHP files in the OpenSeadragon plugin, I realized that I needed to change the name of the folder that I uploaded to the server. The folder that you can download from the Github repository is named: omeka-OpenSeadragon-master. In order for it to be recognized as a valid plugin the folder needs to be renamed OpenSeadragon.