Add user_opinions migration
Initial user_opinion model
Initial user_opinion_uploader
Remove size definition
Add site_changes migration
Initial site_change model
Add carrierwave support on user_opinion
added CourseAttitude
Merge branch 'bgmaster' of github.com:mindpin/eshare into bgmaster
Fix user_opinion_uploader
Merge branch 'bgmaster' of github.com:mindpin/eshare into bgmaster
rename course_attitude spec file
fix #92
笔记功能
memger
update image spec
should ji
update ===  object & number
修改课程页样式
Merge branch 'master' of github.com:mindpin/eshare