Instantly start up if there are no peers to sync with

Please feel free to reject this; it's as much an RFC as anything else.  Instead of introducing new settings for instant startup in development environments, I'm instead simply bypassing the wait part of the cycle if there are no peers to sync with.  This *might* have negative implications in a production environment, but I'm struggling to come up with one; it only shows up if you launch Eurekas a second before you populate DNS or the like.  I believe it ought to be safe.