Add JR Cook to Contributors list

[Eldorian]

Adding myself to the contributor list

[Roshanjossey]

Hi @Eldorian, I'm quite elated about your pull request. I wanna evolve this project to addresses various problems faced by first-time contributors. I'd love to learn about your journey in open source community, the problems, pain points you had etc.
Could you explain how you felt when you went through the tutorial, made a pull request and learned that I merged it?


We’ve recently added social share to our web app. Could you please go to https://roshanjossey.github.io/first-contributions/#social-share and share your first contribution to open source? 
Also, check out projects with easy issues while you’re there.