List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-max_ranking&page=2
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "The tournament in honor of the fact that the number of players in the Game Of Stones group has reached 50 participants. The winners will be immortalized on the wall of glory.",
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                "summary": "This group is no longer operated.",
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            "description": "Hi guyssss",
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            "description": "### ! Does NOT pause on the weekend !\n\n<body>\n  <h2 style=\"color:red\">This tournament is intended for players that don't use vacation.</h2>\n</body>\n\n---\n\n- Just one round of simultaneous games. Chinese Rules/Scoring.\n\n- This is a '**FAST** Correspondence Tournament'. Please avoid delaying your games using the Vacation feature or Pause. Any participant using Vacation or Pause may be disqualified (and forfeit unfinished games) at the discretion of the Tournament Director.\n\n- Please make sure you understand the [**'Clock' settings**](https://github.com/online-go/online-go.com/wiki/Finding-(starting)-a-game#basic-time-controls-explained) before you join this tournament.  It typically takes 2-3 weeks to complete and you will need to log on and play at two well-spaced times most days to avoid losing by timeout.\n\n- If this suits you then, Bonne Partie....and please invite your friends. :)",
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                "summary": "Tournaments for people who like to play quick correspondence games.",
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            "description": "Torneo blitz 9x9. La persona que gane se gana el título de Coroni@, domador@ de virus.",
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                "name": "Fenix",
                "summary": "Club de Go Fénix",
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                "name": "New Zealand Tournaments",
                "summary": "This group exists as a place to enjoy weekly tournaments with competitively minded players using the lesser known but arguably strategically superior New Zealand rule set. All are welcome here ヽ(≧◡≦)ノ",
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            "description": "Double-Elimination tournament for everyone. It will be started as soon as 8 players will join it.\n\nPrevious winners: https://online-go.com/group/12599",
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            "group": {
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                "name": "GO Special Tournaments",
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            "description": "좋은 선수들이 많아지고 있습니다^^",
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                "name": "효원기우회OB",
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