List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=max_ranking&page=101
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=100",
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                "id": 445,
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            "description": "リーグ開始時に参加されているメンバーでの総あたり戦になります。(レーティングによる自動ハンデ付き)\n\n全部のゲームが一斉に始まりますので、自分の手番になっている対局はどんどん着手していきましょう。",
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            "description": "Last tournament was a disaster, so we hold this to make things right again!",
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                "name": "Group for GO",
                "summary": "Don't have a group? No problem, just join this group!",
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            "name": "Kokubunji",
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            "description": "19x19",
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                "id": 119,
                "name": "TOKYO GO!",
                "summary": "Tokyo Go Players Meet Together!",
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            "id": 61090,
            "name": "16 - 22 kyu 9x9 tournament",
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                "username": "Kinsetsu",
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            "description": "A tournament for players working their way through the kyu grade ranks. Playing on a 9x9 board. Hope every one enjoys it.",
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                "name": "Kyu Level Study Group",
                "summary": "A group for kyu level players! Join, play tournaments, and have fun. Thanks for being a part of our community!",
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            "name": "Szeged 2018 12 31",
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                "summary": "Ponto de encontro dos jogadores brasileiros",
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