GET /groups/?limit=3
HTTP 200 OK
  Allow: GET, HEAD, OPTIONS
  Content-Type: application/json
  Vary: Accept
  
  {
    "count": 2079,
    "next": "http://api.rozklad.hub.kpi.ua/groups/?limit=3&offset=3",
    "previous": null,
    "results": [
        {
            "id": 1,
            "name": "ам-41",
            "okr": 0,
            "type": 0
        },
        {
            "id": 2,
            "name": "ам-42",
            "okr": 0,
            "type": 0
        },
        {
            "id": 3,
            "name": "ам-51м",
            "okr": 1,
            "type": 0
        }
    ]
}