Create README for has_many through: lesson
Create README for has_many through: lesson

joebegley15/rails_has_many_through,lparvinsmith/rails_has_many_through,kristenlk/rails_has_many_through,aemassa/rails_has_many_through,ryoconnell/rails_has_many_through,ryoconnell/rails_has_many_through,ga-wdi-boston/rails_has_many_through,joebegley15/rails_has_many_through,ga-wdi-boston/rails_has_many_through,lparvinsmith/rails_has_many_through,kristenlk/rails_has_many_through,aemassa/rails_has_many_through,GHolmes04/rails_has_many_through,GHolmes04/rails_has_many_through