Kyle Conroy e3a68bb3b9 Replace api_key with an options hash
For now, only two options are supported: `api_key` and
`idempotency_key`. In the future, we'll be adding support for additional
headers as needed.
2014-12-17 23:23:46 -08:00
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2014-12-17 23:23:46 -08:00
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