lib폴더는 변경관리에서 제외하도록 조치
주석문 삽입
added two files
removed useless files
changed the class name
added from ruby
Merge branch 'change_class'
deleted two files
changed the class name
delete hello.rb
hello.rb created
changed the class name
added from ruby
merged
changed the class name
added from ruby
Merge branch 'change_class'
ruby.rb deleted
rename hello.rb
HelloWorld 로 클래스명칭 설정