[Decorator] Response formatting

[Romakita]

@ResponseSet(headers) let you to configure response header from annotation.

@Controller("/calendars")
export class CalendarCtrl {

    @Get("/:id")
    @ResponseSet({"Content-Type": "application/json", status: 200})
    public get(): ICalendar {

        return <ICalendar> {id: request.params.id, name: "test"};
    }
// or
    @Get("/:id")
    @ResponseSet("Content-Type",  "application/json")
    @ResponseSet("status",  200)
    public get(): ICalendar {

        return <ICalendar> {id: request.params.id, name: "test"};
    }
}

Annotation's name is a proposal. If you have a better idea of name, tell-it !

[alexproca]

Name proposal :)

Why not name it simply @Headers({ "Content-Type": "application/json", "X-Foo": "Bar" }) or @ResponseHeaders()

[Romakita]

ResponseSet just because I use response.set method :)
But ResponseHeaders is fine.
Headers is too confusing between headers sent with the request and the headers sent on the response.

[Romakita]

#30