discourse/discourse — pull request #2487 by toolness (2014-07-01 14:15:17+00:00)
Title: Update DEVELOPER-ADVANCED.md with Sidekiq info

I was following the advanced instructions but confused as to why activation emails weren't showing up in Mailcatcher, and finally took a look at the [non-advanced developer guide](https://github.com/discourse/discourse/blob/master/docs/VAGRANT.md) to find the mention of Sidekiq. I thought it would be appropriate to mention it here as well.