List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=rules&page=11
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "id": 2949,
                "name": "Facebook Weiqi/baduk players",
                "summary": "Fight your way through Facebooks 8k+ baduk players!?",
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