Need help with "logstash-input-okta_enterprise" plugin

I am not that familiar with ruby but I did manage to build the jruby gem. That one did not work and I am going to try again to get this plugin installed. I am hoping for guidance on a few steps to set up this plugin.

If I download the .gem do I just stick that in a folder and refer to its location in the logstash "Gemfile"? Then do I have to run an "install" command? Anyone have this working? I am slightly gimped in that our security department has blocked access to github and I am unsure if that is where my difficulties arise from or what.

Thank you for any help or assistance with this.