This is a stencil for deploying an AWS API Gateway with a backing lambda using Swagger for both AWS CloudFormation as well as providing API documentation.
Besides this repo, you need to set up an S3 bucket into which ./bin/deploy-api can upload the api.yml into. Download Swagger UI, alter index.html to point to this file (e.g. /files/api.yml) and upload it into the same S3 bucket.
See the corresponding article for further information.