serving fake catalog for testing purposes on /cedn/catalogo.json
fake catalog file
Add endpoint for list of catalogs available

➜  adela git:(fake-catalog) ✗ curl http://localhost:8000/catalogos.json
```json
[
    "http://adelita.herokuapp.com/cedn/catalogo.json"
]
```
Merge pull request #21 from mexico-abierto/fake-catalog

Fake catalog