Help with last exercise in Ruby on Rails course: Javascript-based navigation menu

Hi!

I have reached the last exercise in the Ruby on Rails course and I am stuck at step 9:

https://www.codecademy.com/courses/learn-rails/projects/learn-rails_stories

At this step, you have to use javascript to create a navigation menu that slides out from the left side. I have tried to implement the sidr plugin (Sidr | Berriart) but it is not working.

If anyone has been successful in implementing this step it would be great if you could share the code (maybe a link to Github) or screenshots of the most vital pages:

app/assets/javascripts/application.js

app/views/pages/home.html.erb

app/assets/stylesheets/pages.css.scss

app/views/layouts/application.html.erb

Thanks !