add edit user's name feature.
Fix!
about show the name replace email(when do and listing the quizz).
Repare .travis.yml
repair .travis.yml
try to see travis path.
try fix travis.
try fix travis
list the rvm in travis.
see travis deploy structure.
Try to see travis deployment structure.
Try to exec migrate.
Test install bundle.
Test something.
merge try-fix-travis-dp
Merge pull request #58 from not001praween001/about-username-edit

add edit user's name feature.
Merge pull request #59 from not001praween001/do-not-permit-editusername-oauth

about show the name replace email(when do and listing the quizz).
remove answers from index list.
Merge pull request #60 from yuchan/remove-answers-of-frontpage

remove answers from index list.
Merge pull request #61 from not001praween001/repair-travis-rake-yml

Repair .travis.yml