List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=rules&page=333
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "join if you're happy, I don't know what to write much so... have fun!",
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                "summary": "Feel free to join and create tournaments!\nCreate tournaments = admin\n\nDouble Elimination tournaments every Sunday    \nSingle Elimination tournaments every Thursday\n\nHAPPY",
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            "description": "Letzter Turnierblock",
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            "description": "我会给你们足够的时间下完你的一盘棋. I'll give you enough time to finish your game with no timeout, don't need to worry.",
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