Clint, first, congratulations on your first PR!
Oddly, I had seen the VERY same post/repo a few weeks back and meant to add a readme too! (You’ll notice I got too wrapped up in reading through the code and creating some usability issues after installing the plugin instead.)
Given that you’ve got your own domain and website (and playing in ed/tech like many of us are), and you’re syndicating your blog posts out to Medium for additional reach, I feel compelled to mention some interesting web tech and philosophy in the #IndieWeb movement. You can find some great resources and tools at their website.
In particular, you might take a look at their WordPress pages which includes some plugins and resources you’ll be sure to appreciate. One of their sets of resources is allowing you to not only syndicate your WP posts (what they call POSSE), but by using the new W3C webmention spec, you can connect many of your social media resources to brid.gy and have services like twitter, facebook, G+, instagram and others send the comments and likes on your posts there back to your blog directly, thereby allowing you to own all of your data (as well as the commentary that occurs elsewhere). I can see a lot of use for education in some of the infrastructure they’re building and aggregating there. (If you’re familiar with Known, they bake a lot of Indieweb goodness into their system from the start, but there’s no reason you shouldn’t have it for your WordPress site as well.)
If you need any help/guidance in following/installing anything there, I’m happy to help.
Congratulations again. Keep on pullin’!