This will make the project easier to install and easier to develop.
I believe node and NPM are unnecessary (not used in Make) or in the Procfile
We depend on Ruby for constructing the stylesheets (via Compass and Sass) and to run the Procfile (for make stylesheets). I would prefer to use something besides plain CSS because semantic naming of variables is useful.
This will make the project easier to install and easier to develop.