Replace Strainer with a Rakefile, @sethvargo has mentioned Strainer will be going away.
Clean up kitchen.yml
Remove bounds check while rendering configuration files.

While this could prevent some errors I believe it's mostly a useless
check. We want a error if the template or attribute is
missing This would cause creation of files to silently fail. If I'm
missing the usefulness here slap me.
Finally, we have chefspec!