modified:   app/models/etude.rb
	new file:   features/copie_etude.feature
	new file:   features/rentabilite.feature
	modified:   features/step_definitions/direct_steps.rb
	modified:   features/step_definitions/etudes_steps.rb
	modified:   features/step_definitions/gain_steps.rb
	new file:   features/step_definitions/rentabilite_steps.rb
	modified:   spec/controllers/etudes_controller_spec.rb
	modified:   spec/controllers/projets_controller_spec.rb