module SimpleCov::Configuration

def enable_for_subprocesses(value = nil)

when true, this will inject SimpleCov code into Process.fork
gets or sets the enabled_for_subprocess configuration 
def enable_for_subprocesses(value = nil)
  return @enable_for_subprocesses if defined?(@enable_for_subprocesses) && value.nil?
  @enable_for_subprocesses = value || false
end