List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=player_count&page=5095
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "Well I don't know the name lol ( 25-20k handicap tournament )",
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            "description": "Come on, 25-20k players, join this tournament. :) Attention: **Auto handicap**",
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                "summary": "Don't have a group? No problem, just join this group!",
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            "description": "So.\nNew Year New Tournement I guess.",
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