Document support for Configuration#mapping.
Allow configuration of Cookies.

Allow the `Lotus#configuration` to inject the `Lotus::Action::Cookies`
module in your application’s controller.

When the application is loading the framework,
`Lotus::Loader.load_frameworks!` will inject the before mentioned
module if the configuration is set.

Closes #1.

Signed-off-by: Josue Abreu josh@pixelpt.com
Improve `Configuration#cookies` documentation.

- Documentation should be high level.
- Replace boolean with TrueClass & FalseClass.
- Removing redundant overloads.
Did not ship with 0.1.0.
Proper describe naming for #cookies.
`Configuration#cookies` integration tests and fixture.