exercism/exercism.io — pull request #1407 by millarde (2014-02-20 17:43:50+00:00)
Title: add explanation of when nitpicking is available

In the context of the current file, wasn't sure if this notice belonged at the top or as a footnote. Since there was already an end quote, I put it at the top -- reading the remaining info will be more pertinent once you have the ability to nitpick. But I'm open to any changes you'd like.