MaestroElearning/MERThumbnailKit — pull request #7 by ikesyo (2014-05-16 04:01:45+00:00)
Title: Use -doNext: instead of -flattenMap:

In this case, you don't need to use `-flattenMap:`.

If you need only injecting some side-effects to source signal, but not converting `next` values, `-doNext:` could be used instead.