Get gem licenses

licenses.rb

File.open('licenses.txt', 'w+') do |io|
  Dir.glob('.gem/**/*LICENSE*').map do |filename|
    io.write("====================================\n")
    io.write("#{filename}\n")
    io.write("====================================\n\n")
    io.write File.read(filename)
    io.write("\n\n\n\n")
  end
end