code: function use(options) {
    options = _.defaults(options || {}, {
      stdout: true,
      stderr: true,
      print: false
    });
  
    if (options.stdout)
      wrapWrite('stdout', options.print);
  
    if (options.stderr)
      wrapWrite('stderr', options.print);
  }
docs: Start mocking std output.
  
  @param {object} [options] Options
  @param {boolean} [options.stdout=true] Mock stdout
  @param {boolean} [options.stderr=true] Mock stderr
  @param {boolean} [options.print=false] Also print to std