remove scheme and domain from the Amazon Provider class

- make one variable URL in the provider class
- add helper function to parse url for the url generator
- update the readme file

commit: 53d84e20296a4f077b5dc2e7250990f4772f2ec4
update checking if excluded extensions are defined or empty

comment: e656298335f4ccfdbca480d9ccf9f69a30c73f8b
update reading the configuration from the $supplier

comment: 53d84e20296a4f077b5dc2e7250990f4772f2ec4