15 : For 번역완료

15: For 완료하였습니다.
Merge pull request #1 from pcjpcj2/patch-1

15 : For 번역완료
function parts translated.
web server translated
add and translated chapter 3
Web servers, Images 번역
Merge pull request #50 from suapapa/master

55, 56 번역완료
Exercise: Images, Exercise: Rot13 Reader 완료
Merge pull request #54 from importre/master

Exercise: Images, Exercise: Rot13 Reader 완료
import, export, package, const, for, if, struct,
pointer, slice, map 완료. 자연스럽지 않던 문장 정리.
함수, 클로져, 스위치 완료
range 수정
Merge branch 'master' of github.com:golanger/go-tour-translator

Conflicts:
	tour.article
merge to go-tour-translate master
Merge pull request #56 from loslch/master

1~43 문장 다듬기 완료