Merge pull request #34 from importre/master

28-31 맵 관련 번역 완료
translated "68 and 69: Exercise: Equivalent Binary Trees"
Merge pull request #36 from suapapa/master

68,69 번역완료
Add script to sieve un-traslated chapter

    $ ./tr_stat.py
     2:* Go local
     3:* Packages
    ...
    54% traslated

It compare capter titles of tour.article.orig(en) and tour.article(ko)
And, print it with chapter number if they are same.
translated "32 to 35 Slices"
translated "36 to 37 function values, closure"
Merge pull request #39 from pcjpcj2/patch-11

translated "32 to 35 Slices"
Merge pull request #40 from pcjpcj2/patch-12

translated "36 to 37 function values, closure"
Merge pull request #37 from suapapa/master

번역할 챕터 프린트 해 주는 스크립트 추가