add .gitignore

HELP.md

target/classes/application.properties

...lasses/kr/ajousw/myspringweb/MyspringwebApplication.class

...es/kr/ajousw/myspringweb/controller/MyWebController.class

...s/kr/ajousw/myspringweb/dto/FavoriteMusicRequestDto.class

target/classes/kr/ajousw/myspringweb/dto/MusicList.class

.../classes/kr/ajousw/myspringweb/entity/FavoriteMusic.class

...kr/ajousw/myspringweb/repository/FavoriteRepository.class

.../classes/kr/ajousw/myspringweb/service/MusicService.class

target/classes/public/app.bundle.js

target/classes/public/index.html

target/maven-archiver/pom.properties

...-compiler-plugin/compile/default-compile/createdFiles.lst

...en-compiler-plugin/compile/default-compile/inputFiles.lst

...r-plugin/testCompile/default-testCompile/createdFiles.lst

...ler-plugin/testCompile/default-testCompile/inputFiles.lst

target/myspringweb-0.0.1-SNAPSHOT.jar

target/myspringweb-0.0.1-SNAPSHOT.jar.original

...EST-kr.ajousw.myspringweb.MyspringwebApplicationTests.xml

...rts/kr.ajousw.myspringweb.MyspringwebApplicationTests.txt