docs: function clients(options) {
    options = options || {};
    options.registry = options.registry || Registry.mirrors.nodejitsu;
  
    var githulk = options.githulk || new GitHulk();
  
    //
    // Only create a new Registry instance if we've been supplied with a string.
    //
    var npm = 'string' !== typeof options.registry
      ? options.registry
      : new Registry({
        registry: options.registry,
        githulk: githulk
    });
  
    return {
      git: githulk,
      npm: npm
    };
  }