Add IRB H = Homebrew alias

Library/Homebrew/brew_irbrc

@@ -4,6 +4,6 @@
 
 require 'irb/completion'
 
-IRB.conf[:SAVE_HISTORY] = 100
 IRB.conf[:HISTORY_FILE] = "#{Dir.home}/.brew_irb_history"
 IRB.conf[:IRB_NAME] = "brew"
+H = Homebrew

Library/Homebrew/dev-cmd/irb.rb

@@ -76,7 +76,6 @@ module Homebrew
         if args.pry?
           Pry.config.should_load_rc = false # skip loading .pryrc
           Pry.config.history_file = "#{Dir.home}/.brew_pry_history"
-          Pry.config.memory_size = 100 # max lines to save to history file
           Pry.config.prompt_name = "brew"
 
           Pry.start