required annotation supports alternative
added card creation and update functionality
added retrieve, create and update for charges
implemented creation and update for customer
disabled encoding for non string types
api key now provided as first argument for tests
shared setup and teardown for resource tests
first real customer tests
Remove lock file
CustomerCollection added

generic all() call for retrieving all items of a resource
Fixed async setUp and tearDown
Added TODO comments
Merge pull request #3 from martflu/master

Test preparation