Instant HTML Host API

LIST:   GET /api/html (header: Authorization: Bearer <pass>)
CREATE: POST /api/html (body: raw html, header: Authorization: Bearer <pass>)
UPDATE: PUT /api/html/:id (body: raw html, header: Authorization: Bearer <pass>)
DELETE: DELETE /api/html/:id (header: Authorization: Bearer <pass>)
VIEW:   GET /s/:id