This library is a wrapper for the Exiftool command-line application (https://exiftool.org) written by Phil Harvey. It provides the full power of Exiftool to Ruby: reading and writing of EXIF-data, IPTC-data and XMP-data. Branch master is for actual development and branch compatibility-version is for compatibility with Ruby 1.8 and exiftool versions prior 7.65.
Add a Gemfile for easily
bundle install
before starting development. It also checks out from the repository theGemfile.lock
as explained here http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/