scalefactory/build-cloud — pull request #22 by madAndroid (2014-11-20 16:27:00+00:00)
Title: Merge hash keys that are arrays into a single merged array

See: http://www.ruby-doc.org/core-2.1.5/Hash.html#method-i-merge
and
http://stackoverflow.com/questions/11171834/merging-ruby-hash-with-array-of-values-into-another-hash-with-array-of-values