List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=568
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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                "name": "Shou 'Shu' Group",
                "summary": "Are you looking for a fun and enjoyment?. Will here we are, we encourage you to join our group. Everyone is welcome, newbie or not.",
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            "description": "A Go tournament that (should) be rather quick and is starting soon!",
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