Parse through JSON grade output

display_grades.rb

# this file should live in the same directory as the JSON grade output

require 'json'
output = File.open( "output.txt","w" )
Dir.foreach('.') do |item|
  next if item == '.' || item == '..' || item.include?('json')  == false
  file = File.read(item)
  score = JSON.parse(file)['summary_line']
  output.write("#{item} - #{score}\n")
  puts "#{item} #{score}"
end