Merge pull request #10 from hlee/master

deploy to heroku change
refactor Gemfile
rm public/assets
remove price and cart in layout
Merge pull request #11 from caok/issue

refactor something
add 6bey banner
Merge pull request #1 from jerry134/master

merge
remove rails/test_unit
add rspec
modify user_nav
add time_zone and zh-CN
Merge pull request #12 from caok/rspec

add Rspec
add tag support use acts-as-taggable-on
add bootstrap-will_paginate
Merge pull request #17 from jerry134/bootstrap-will_paginate

add bootstrap-will_paginate
added relation between question and user
column for relation
delegate to user