Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
将存入session的question修改为question_id
Update questions_controller.rb
优化
修改session中存储的变量名current_question为current_question_id
Merge pull request #9 from Surlavi/master

解决Session里东西太多导致某些用户不能连接我们网站