Show expires if quiz taken
Compute grade in a better way
Fail if grade is lower than 60%
Add rspec
Add factory_girl gem and factories
Add course model spec
Add courses controller specs
Move method from helper to model
Add lesson factory
Add course minitest
Add failed template
Add quiz controller specs
Add question and answer factories
Move grade into a method
Add fuubar to rspec
Fix quiz controller bug
Add rspec-sidekiq gem
Add factory for quiz
Added sidekia-rspec configs
Add more quiz controller specs