meng
rename create_node() to create_course_node() in course.rb
add several course unit tests
course unit tests done
fix an error
fixture added in user_test.rb
Merge branch 'hao' of https://github.com/mengcao/E608
hao_mar_13
hao_mar_13
hao_mar_13
hao_mar_13
hao_mar_13
roll back team and assignment_team to orgin and confined all the changes to course_team
adding something temp
removing the temp stuff
done with test