List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=name&page=658
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=name&page=657",
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            "description": "Let us have a competition cool.",
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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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            "description": "Hola vamo a jugar",
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