code: function encodeWildGeoObject(location, geohash) {
    validateLocation(location);
    validateGeohash(geohash);
    return {
      ".priority": geohash,
      "g": geohash,
      "l": location
    };
  }
docs: 把坐标位置信息和geohash封装为一个WildGeo对象
  @param {Array.<number>} location  [latitude, longitude]坐标数组
  @param {string} geohash 坐标位置的geohash值
  @return {Object} GoeDog对象