First cut at the vNext of SDK using generated code from XSD.
Merge branch 'master' into vNext
Cleaning up imports
subscription erport intermediate
SubscriptionList work
Subscriptionlist and createtransaction updates
Adding new api subscriptionList and updating create transaction for card-on-file
Adding overloaded methods to support setting merchantauthentication and environment once and sample code
fixing some static scan issues
changing the 1.8 method to 1.5
updating end point names
Changing the package name to api from apicore
Merge pull request #23 from ramittal/vNext

Merge pull request that includes SDK refactoring + support for latest API release
Includes ArbGetSubscriptionList