code: function (userOptions) {
    var defaultOptions = { ignore: [], collection: null, jekyllStyleLayout: true };
  
    for (var opt in userOptions) defaultOptions[opt] = userOptions[opt];
  
    return defaultOptions;
  }
docs: Merges user provided options with the defaults.
  
  @param  {Object} userOptions
  @return {Object}             Default: { ignore: [] }