List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-max_ranking&page=1504
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-max_ranking&page=1503",
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            "description": "000cfucfvm yibfuchhsistmxwccccccc",
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            "description": "now succeed to the 10th of sunday go\n \nthe tournament is for fun",
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                "name": "Sunday GO and MORE",
                "summary": "You can't miss this group, join now!",
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            "description": "Evento da RME-SP.",
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        {
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            "name": "Third Inglemoor Go Glub Tournament",
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            "description": "It's time we had another tournament.",
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            "description": "A new Tournament is being Awakened!!🔥\n\nComing on 15th May!!",
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                "name": "Online Go - OGS",
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