module Rspec::Core

def self.configuration
  @configuration ||= Rspec::Core::Configuration.new
end

def self.configure
  Rspec.deprecate('Rspec::Core.configure', 'Rspec.configure', '2.0.0')
  yield configuration if block_given?
end

def self.install_directory
  @install_directory ||= File.expand_path(File.dirname(__FILE__))
end

def self.world
  @world ||= Rspec::Core::World.new
end