Moving integer data out of the controller and into a new model
Adding API endpoint for POST /integers
Updating POST /integers to not accept decimals (also needed to include body parser)
POST /integers refuses to create data if provided number is a string (not a string-based number)
POST /integers now accepts number-typed and string-typed integers and responds back
GET /integers now createsnew integer resources and ensures they exist and are accessible through the GET /integers endpoint