I added this so that the `spec/integration` specs are more readable as examples. E.g.: https://github.com/Factlink/pavlov/pull/28/files#L4R6

You could of course stick with the `create_blog_post = Class.new do` pattern used in other specs, but I think it'd be useful if users who want a little more detail than the README provides could have a read through the examples in the specs, without having to dive into the nitty-gritty detail in `spec/pavlov`.