Sublime Text 2 Keymap to Markdown

gistfile1.rb

#!/usr/bin/env ruby
#encoding: utf-8

require 'json'

old_keymap = JSON.parse IO.read('keymap-file')
result     = "Key|Description\n---|---\n"

old_keymap.each do |keymap|
    keys    = keymap['keys']
    command = keymap['command']
    
    keys = keys.join(', ')
               .gsub('+'            , ''      )
               .gsub('super'        , "\u2318")
               .gsub('ctrl'         , "\u2303")
               .gsub('alt'          , "\u2325")
               .gsub('shift'        , "\u21e7")
               .gsub('enter'        , "\u21a9")
               .gsub('escape'       , "\u238b")
               .gsub('tab'          , "\u21e5")
               .gsub('backspace'    , "\u232b")
               .gsub('delete'       , "\u2326")
               .gsub('space'        , "\u2423")
               .gsub('up'           , "\u2191")
               .gsub('down'         , "\u2193")
               .gsub('left'         , "\u2190")
               .gsub('right'        , "\u2192")
               .gsub('plus'         , "+"     )
               .gsub('equals'       , "="     )
               .gsub('minus'        , "-"     )
               .gsub('backquote'    , "`"     )
               .gsub('forward_slash', "/"     )

    command = command.gsub('_', ' ')
                     .capitalize

    result << "#{keys}|#{command}\n"
end

File.open('sublime-text-2-keymap.md', 'w') do |file|
    file << result
end