def initialize(*args)
      super
      @options = args.extract_options!
      @writer = (args.shift || STDOUT)
    end
Creates a new IOReporter. You can give it your own IO writer or it will default to +STDOUT+.
If you want to specifically turn colorization off in the output, pass the +plain+ option.

@param [IO] writer the writer to use for results
@param [Hash] options options for reporter