Hooked activities lookup to API. Needs Playlists to be complete

- Hits: https://partner.api.beatsmusic.com/v1/api/activities/
- Takes an id and returns: 
```
{
    "data": {
        "type": "activity",
        "name": "BBQing",
        "id": "ac3",
        "num_id": 3,
        "created_at": 1372374427
    },
    "code": "OK"
}
```
@sabind