Create Readme.md
Merge pull request #21 from raul782/master

Added ProductListingDetails and Clean format
Merge pull request #22 from raul782/master

Clean format for specs
Merge pull request #23 from raul782/master

Fixed ProductListingDetails in caps for  identifiier attributes
Merge pull request #24 from raul782/master

Added GetOrders feature
Merge pull request #19 from cordoval/patch-2

Create Readme.md
Updated Readme.md