Create the Config object
Add Request class
Add Environment value object
Add Response
Add use Exception statement
Remove php 5.3 from travis
Clean up dependencies
Delete all the things
Add Environment value object
Add Callback value object
Add CartId value object
Add Currency value object
Add the InstId value object
Add Money value object
Add Password value object
Add the Secret value object
Add the Request class
Add the Body immutable object
Add the Response class
Change Callback to Route