List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=5457
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "We put the _chill_ in chiliad.\n\n<small>(Disclaimer: The tournament is free-for-all. You don't actually have to be a millennial.)</small>",
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            "description": "Here is the new 19x19 tornament, the first one for this group, good luck!",
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