List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-max_ranking&page=810
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-max_ranking&page=809",
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            "description": "A minha primeira tentativa de criar um torneio… ainda não conheço bem as opções, mas espero que não esteja muito mal.",
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                "summary": "Grupo de jogadores da Associação Portuguesa de Go",
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                },
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            "description": "let’s play some go :)",
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            "group": {
                "id": 2766,
                "name": "BloombergGO",
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            "ended": "2019-01-21T13:31:32.885314Z",
            "start_waiting": "2018-08-28T17:00:06.957865Z",
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        },
        {
            "id": 35486,
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                "ui_class": "supporter"
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            "description": "13x13 live, please pay attention to time limit. This is first time I create tournament here so not sure how all mechanics work, will see.",
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