gistfile1.rb

# muzang.rb
require 'muzang'
require 'muzang-plugins'

class Bshellz
  include Muzang::Plugins::Helpers

  def initialize(bot)
    @bot = bot
  end

  def call(connection, message)
    on_join(connection, message) do
      connection.msg(message.channel, '!keep rege')
      connection.part(message.channel)
    end

  end
end

EM.run do
  @bot = Muzang::Bot.new(irc_host:  'irc.freenode.net',
                         irc_port:  6667,
                         nick:      'rege',
                         channels:  ['#bshellz'])
  @bot.register_plugin(Bshellz)
  @bot.start # start after register plugins
end