[Composer] 설치한 컴포저 업데이트

Window 에서 이미 설치한 Composer의 버전을 확인하고

최신 버전으로 업데이트하기

D:\work > composer

설치된 Composer의 도움말을 보여준다.

D:\work > composer -V

Composer version 1.4.1 2017-03-10 09:29:45

D:\work > composer self-update

Updating to version 1.5.1 (stable channel).

   Downloading (100%)

Use composer self-update --rollback to return to version 1.4.1

D:\work >

D:\work > composer -V

Composer version 1.5.1 2017-08-09 16:07:22