cakebread/yolk — pull request #25 by eht16 (2014-05-04 15:07:13+00:00)
Title: Try file 'PKG-INFO' or 'METADATA' to retrieve package metadata

Some packages seem to store the metadata in a file called 'METADATA' instead
of 'PKG-INFO'. Probably the change is related to a newer pip or setuptools
version but I don't know for sure.