Check out the following blog posts:

1. Building a RESTful API with Koa and Postgres
2. User Authentication with Passport and Koa

1. Fork/Clone
2. Install dependencies - npm install
3. Fire up Postgres and Redis on the default ports
4. Create two local Postgres databases - koa_api and koa_api_test
5. Migrate - knex migrate:latest --env development
6. Seed - knex seed:run --env development
7. Sanity check - npm start
8. Test - npm test