Update 2014-04-07-the-problem-with-comments.md

I added the way I solved the problem with using Facebook. A solution that works, but which I'm very uncomfortable with.
Merge pull request #2 from mortjac/patch-1

Update 2014-04-07-the-problem-with-comments.md

I think I may modify this paragraph to speak more broadly about third-party commenting/discussion services.