Add support for the lamda-api web framework

This project already supports express and restify - it would be great to see support for the [lambda-api](https://github.com/jeremydaly/lambda-api) package too. Should be very similar to the express module, as it follows the same `req, res, next` pattern.

Start by locating the existing express and restify modules and compare how they handle the req, res, next pattern. Identify the corresponding tests or integration entry points, then verify that lambda-api support behaves like the existing framework integrations.

Written by the indexing model from the issue text.