Feature/folder structure

Changes the folder structure such that individual services are in their respective folder under routes: 

├── routes
│   ├── flickr.js
│   ├── index.js
│   ├── instagram.js
│   ├── localisation.js
│   ├── rotten.js
│   ├── schema.js
│   ├── star.js
│   └── twitter.js

The entirety can then be included to the application by simple stating

`routes(app, apiVersion);`

in the server.js. Before this change the server.js was quite a bloat.