This reads a yaml file from a directory higher!

Very very useful for quickly changes/switching settings!
Hey Ben,

We really like the idea of a config directory! Next to having a nice settings file for ZAT, we love the idea of example config files. If the example files would be included in the zip file, in the future Zendesk could use these files and show them whenever a user is configuring an app. But that's future tought, for now, a config directory with yaml and yaml.example files will be fantastic.

I will make the changes and push it!

Olaf