docs: function makeLink(rel, ldo) {
    var i, key, keys, result;
  
    if (typeof ldo === 'string') {
      return '<' + ldo + '>; rel="' + rel + '"';
    }
  
    result = '<' + ldo.href + '>; rel="' + rel + '"';
    keys = Object.keys(ldo);
  
    for (i = 0; i < keys.length; i += 1) {
      key = keys[i];
  
      if (key !== 'href' && key !== 'rel') {
        result += '; ' + key + '="' + ldo[key] + '"';
      }
    }
  
    return result;
  }