Release 3.27.0 rc2

### Fixed Bugs:

- pm2 installation documentation error
- Use absolute paths with __dirname when adding processes
  to the ProcessSet instance

### Added Features:

- HTTP REST CRUD routes for all database tables
- Use express.Router instead of custom ResourcesRouter
- Enable Cross Origin Resource Sharing by default
The ApiRouter class is still a javascript constructor function so it is capitalized by convention. In a forthcoming release ApiRouter will be replaced by an instance of express.Router, and will thus be not capitalized.