CocoaPods/CocoaPods — pull request #814 by punycode (2013-02-23 22:17:17+00:00)
Title: Proposed extension for issue #812

With the change in 0.16.3, which disabled flattening for zip files
some pods seem to break. While the rationale for the flattening
change is a good one, it would be nice to reenable flattening support
explicitly in the source configuration for your pod.

references https://github.com/CocoaPods/CocoaPods/issues/812