Use https://rubygems.org instead of http (PR #3)

CLA signing incoming, just printed it.

GitHub

I just got this as a reply from info@discourse.org:

Thanks for writing!

Unfortunately, this address is not monitored, so nobody can respond to
your email.

If you'd like to have a discussion, great! That's what we do at Discourse. Try:

- http://meta.discourse.org
- http://discourse.org

:tired_face:

We just changed the CLA to a google doc form instead. A thousand apologies.

https://docs.google.com/a/discourse.org/spreadsheet/viewform?formkey=dGUwejFfbDhDYXR4bVFMRG1TUENqLWc6MQ

Filled out.

Perfect, thanks! I’m assigning to @eviltrout to make sure the change to Gemfile.lock is kosher

Awesome, thanks!