def get_commit_message(changed_modules)
    StringIO.open do |s|
      s.puts "rim sync."
      s.puts
      changed_modules.each do |m|
        s.puts m.local_path
      end
      s.string
    end
  end
def get_commit_message(changed_modules)
    StringIO.open do |s|
      s.puts "rim sync."
      s.puts
      changed_modules.each do |m|
        s.puts m.local_path
      end
      s.string
    end
  end
create default commit message from array of changed modules