def files_in(directories)
      files = []
      Find.find(*directories) do |path|
        unless File.directory?(path) or File.symlink?(path)
          files << File.expand_path(path)
        end
      end
      files.uniq
    end
def files_in(directories)
      files = []
      Find.find(*directories) do |path|
        unless File.directory?(path) or File.symlink?(path)
          files << File.expand_path(path)
        end
      end
      files.uniq
    end
Returns the list of files in the directories provided