front matter. By including "prod_build: false" in _config.yml unpublished posts
will get build. This is ideal for:
* Checking out if the layout, etc, works out for your draft post, without
publishing it to "production"
* One can use this setting for other uses as well. For example, one
can exclude Disqus integration when prod_build is false in your
Tests included. Related to Issue 41.