calvinmetcalf/shapefile-js — pull request #33 by surkova (2014-09-17 10:29:26+00:00)
Title: Skipping Mac OSX Resource Forks

Zip files created in Mac OS X contain files hidden in __MACOSX folder, those files have the same extension as the files we're looking for in the zip archive, so they get treated as the real ones and cause problems.