List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-id&page=3490
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Hola! \nEn ésta ocasión jugaremos un torneo de eliminación simple! El que pierde sale del torneo y el que gana sigue avanzando hasta la final! Emocionante no?",
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