List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=subsequent_pairing_method&page=770
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "Thành viên mới mời mọi người cùng tham gia ^^",
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            "description": "Do không biết tạo rengo kiểu gì nên e đã ấn bừa. Mọi ng tham gia, ai biết tạo thì chỉ em nhé :)",
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            "description": "This tournament is made for people to learn from each other, and to develop their senses of the game. It is also the first of the series, I will be hosting multiple tournaments. \n\nPlease join my groupe\nThank you,\nHave fun",
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