code: function serialize(obj) {
    var params = [],
      encodedBrackets = encodeURIComponent('[]');
  
    _.forOwn(obj, function(value, key) {
      if (typeof value === 'string' ||
        typeof value === 'number' ||
        typeof value === 'boolean') {
        params.push(key + '=' + encodeURIComponent(value));
      } else if (typeof value === 'object' && Array.isArray(value)) {
        params.push(value.map(function(param) {
          return key + encodedBrackets + '=' + encodeURIComponent(param);
        }).join('&'));
      }
    });
  
    return params.join('&');
  }
docs: Serialize an object into a valid URL string
  @param  {Object} obj - Params object
  @return {String} - A valid encoded URL string