modified the level model.
Merge branch 'master' of github.com:nitinzd/brails
write the crud opration for level model.
Merge branch 'master' of github.com:nitinzd/brails
add show action in level controller.
Merge branch 'master' of github.com:nitinzd/brails
remove the test cases for has_many user_topics from user_spec model.
Merge branch 'master' of github.com:nitinzd/brails
add the destroy and update action for level controller.
Merge branch 'master' of github.com:nitinzd/brails