The new version of HTTParty (perhaps because of multi_json?) is wrapping a 1-key response in an array where before it wasn't. This updates the specs to match and makes the mocked data look more like the `HTTParty::Response` it's emulating. I've also updated `#get_access_token_for_session_key` to use post without the `Mogli::Client` instance, since that's what Mike's preferred style seems to be in `#get_access_token_for_application` and the client offers nothing as a middleman. Future work: The `Mogli::Client#api_path` instance method should probably be a class method, as it doesn't rely on the state of an instance.
… so do not try to gsub nil