README.md 배지 추가 (#48)

Author: dvlprsh

README.md

@@ -1,8 +1,9 @@
 # TypeScript-Handbook 한글 문서
 
 [![Build Status](https://api.travis-ci.com/typescript-kr/typescript-kr.github.io.svg?branch=master)](https://travis-ci.com/github/typescript-kr/typescript-kr.github.io) <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-21-orange.svg?style=flat-square)](#contributors-)
-<!-- ALL-CONTRIBUTORS-BADGE:END -->
+[![All Contributors](https://img.shields.io/badge/all_contributors-21-orange.svg)](#contributors-)<!-- ALL-CONTRIBUTORS-BADGE:END -->
+[![Release Date](https://img.shields.io/github/release-date/typescript-kr/typescript-kr.github.io)](https://github.com/typescript-kr/typescript-kr.github.io/releases)<!-- RELEASE-DATE-BADGE:END -->
+[![Stars](https://img.shields.io/github/stars/typescript-kr/typescript-kr.github.io)](https://github.com/typescript-kr/typescript-kr.github.io/stargazers)<!-- STARS-BADGE:END -->
 
 [TypeScript Handbook](https://www.typescriptlang.org/docs/home.html)을 번역하는 프로젝트입니다.
 
@@ -61,4 +62,4 @@
 
 [마이그레이션된 프로젝트](https://github.com/yeonjuan/TypeScript-Handbook-ko)의 컨트리뷰터도 포함된 목록 입니다 :)
 
-This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!