Function to request a list of the current available settings for the device.
Request
GET: https://ip-10-0-1-196.devices.kineticsmart.com:44443/api/v1/settings.json
Response
Settings in the Kinetic system are simply a set of key:value pairs that are use to set up terminal, merchant, system and other parts of the application on the device.
A number of the settings are set centrally and cannot be changed locally. For settings that can be changed, see the equivalent POST settings.json function.