* Added routes for login, authenticate and logout actions.
Se agrega funcion para descarga de libros
Merge pull request #1 from MontealegreLuis/security_routes

* Added routes for login, authenticate and logout actions.
Agregue Save Book.
Mezclo aaciones de login con guardar libro
Merge pull request #2 from enriquehf/master

Pull Request
Se hace merge de descargar libro con guardar libro
Merge pull request #3 from kayec/master

Acción de descargar libro
Agregue compartir libro