Fix query params on curl requests
Change headers to be able to request the Api using XML or whatever ! Use "Accept" header instead on "Content-type"
Merge branch 'develop'
Use the new api url
Add functions on the library for order workflow. It misses some functions and tests. They will be commited later.
Add tests for all cart methods. We can now :
- Set a new user
- Create a new cart
- Add/remove items to a cart
Add methods for addresses
Merge branch 'develop' of https://github.com/Modizy/Iceberg-API-PHP
We can now use iceberg library with access token or with SSO.

Plz refer to the new README
edited to work with prestashop
merge massacre...
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