code: function randomString(options) {
    var set = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz';
  
    if (options.symbols === true) {
      set += '!@#$%^&*()<>?/[]{},.:;';
    }
  
    var key = '';
    for (var i = 0; i < options.length; i++) {
      key += set.charAt(Math.floor(Math.random() * set.length));
    }
  
    return key;
  }
docs: Creates a random string
  
  @param     {Object}    options
  @return    {String}