Suport the Swagger representation and thus API browser and client-generation

[timbunce]

Swagger is

a simple yet powerful representation of your RESTful API. With the largest ecosystem of API tooling on the planet, thousands of developers are supporting Swagger in almost every modern programming language and deployment environment. With a Swagger-enabled API, you get interactive documentation, client SDK generation and discoverability.

The Raisin micro-framework supports swagger.