added Model
added Model::Information and Model::Validations
Transaccion.model should be included in Model.names
added ModelCaching and requiring on `active_record_extensions` initialiser
using `cached_find` instead of `find`
added Bandango::Caching

and using `cached_business` instead of `business`
added Model::Caching
added Model::Identificable
added Transaccion::Identificable and sending `identificator` on TransaccionSerializer