this api is for esprit-tn.com (student space) so Esprit students can use it to access their grade,absences.... it scraps esprit-tn.com and then store the data to no sql database. you can test the app at https://esprit-api.herokuapp.com
i am still working on the documentation it will be available soon.
P.S. mlab database user is not provided with the code you need to create your own.