OMG WHY HAVE I NOT ALWAYS HAD THIS??

.irbrc

IRB.conf[:USE_READLINE] = true

# awesome print
begin
  require 'awesome_print'
  AwesomePrint.irb!
rescue LoadError => err
  warn "Couldn't load awesome_print: #{err}"
end

# irb history
IRB.conf[:EVAL_HISTORY] = 1000
IRB.conf[:SAVE_HISTORY] = 1000
IRB.conf[:HISTORY_FILE] = File::expand_path("~/.irbhistory")