Fixed __call__ to return properties for PostResponse
Introducing DELETE method
Fixed Unit Tests [DELETE and POST methods are supported and some refactoring)
Added test for DELETE and fixed issue with delete method
Implementation of method validation.  Requires some clean up and test coverage
Removing alias 'post' to 'create' method
Adding template_uri_check for delete and updated test coverage
Refactored http status code check for POST and DELETE, updated tests
Removed check for 202
Fixing tests after removing location check for 202