module Rspec

def self.configure
  yield Core.configuration if block_given?
end

def deprecate(method, alternate_method=nil, version=nil)
  version_string = version ? "rspec-#{version}" : "a future version of Rspec" 
  message = <<-NOTICE
*************************************************************
ECATION WARNING: you are using deprecated behaviour that will
emoved from #{version_string}.
ller(0)[2]}
method} is deprecated.
CE
  if alternate_method
    message << <<-ADDITIONAL
ease use #{alternate_method} instead.
TIONAL
  end
  message << "*****************************************************************"
  warn(message)
end

def warn(message)
  Kernel.warn(message)
end