GET /books -> List all the books in JSON.

GET /books/:id -> Returns the book for the given ID

POST /books/ -> JSON data to inserted to the books db.

PUT /books/:id -> JSON data to update the book data.

DELETE /books/:id -> Removes the book with the specified ID.

OPTIONS / -> Gives the list of allowed request types.

HEAD / -> HTTP headers only, no body.

TRACE / -> Blocked for security reasons.