Tests / Examples need to be created

[jaboc83]

I'd like to mirror the YNAB tests for now that live in the Ruby/JS sdks for consistency.

https://github.com/ynab/ynab-sdk-js/tree/master/test
https://github.com/ynab/ynab-sdk-ruby/tree/master/spec

[jaboc83]

Probably going to need to address #1 before this can really be done properly. I've started writing a couple tests as examples but I'm going to hold off on more until I make the mock. Talking with YNAB's dev team they seem interested in creating some kind of global mock, but I'm not sure if/when that might happen so considering using VCR or something else for now.