List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-rules&page=5890
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "The tournament will start at 15:00 UTC on Monday, 5.2.2014. This is live tournament, so PLEASE BE ONLINE!",
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