Converted some array.length to array.push

lib/dao-factory.js

@@ -648,7 +648,7 @@ module.exports = (function() {
             values[updatedAtAttr] = Utils.now()
           }
 
-          records[records.length] = values
+          records.push(values)
         })
 
         self.QueryInterface.bulkInsert(self.tableName, records)

lib/dao.js

@@ -105,11 +105,11 @@ module.exports = (function() {
     if (fields) {
       if (self.__options.timestamps) {
         if (fields.indexOf(updatedAtAttr) === -1) {
-          fields[fields.length] = updatedAtAttr
+          fields.push(updatedAtAttr)
         }
 
         if (fields.indexOf(createdAtAttr) === -1 && this.isNewRecord === true) {
-          fields[fields.length] = createdAtAttr
+          fields.push(createdAtAttr)
         }
       }