List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5350
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "Welcome to this trip, joy of life.",
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                "username": "Willy Ku",
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                "id": 12100,
                "name": "GoBanDit+",
                "summary": "Заходи в группу тут много интересного,заранее спасибо))\nCome to the group here a lot of interesting things, thank you in advance))",
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        {
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            "ended": "2009-03-31T22:48:41Z",
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}