Auth in Redis and Laravel: Controller for authenticating users in Redis

This class is a controller for authenticating users in a Redis database.

It provides action methods for several aspects about authentication like aspects like:

- Authenticating a user with the email and password values passed as request parameters
- Check if a user with a given email is already logged in
- Return the number of visits a logged user did
- Create the records of a user given his email and password
- End the session of a logged user

The class returns responses in JSON format suitable for responses to API calls made from the Web browser side.