fix extra method for post requests
Fail on 404
Fail on 405
POST body examples
fix string literals in writer
Call hasBody on method, not on method type
scenario spec, serialize only types for tests
construct scenarios
add http headers example
update todo
closures usage example: we need to simplify it
Merge pull request #4 from stanfy/roman/configure-tests

POST body examples and extra checks of response status code