Add batch accept script (#649)

* add updated accept script

* update changelog

Author: loreina

.github/CHANGELOG.md

@@ -5,17 +5,20 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [2.4.0](https://github.com/hackmcgill/hackerapi/tree/2.4.0) - 2020-01-31
+## [Unreleased]
 
 ### Added
 
--   Added the live site link to the check in email
+-   Add batch accept script
 
-## [2.3.1](https://github.com/hackmcgill/hackerapi/tree/2.3.1) - 2020-01-15
+## [2.4.0](https://github.com/hackmcgill/hackerapi/tree/2.4.0) - 2020-01-31
 
 ### Added
+
 -   Added the live site link to the check in email
 
+## [2.3.1](https://github.com/hackmcgill/hackerapi/tree/2.3.1) - 2020-01-15
+
 ### Removed
 
 -   Removed travel routes from hacker