MiddleManager: a mostly-powerless little content manager for static sites

This is my weekend hack. It's only a few hours old, but I'm looking for early feedback if anyone's interested.

It's a YAML-powered local editor for static sites (e.g., sites built with the Middleman Ruby library)

My main influence is the excellent PHP content manager "Perch". Eventually, I'd like to bring some of Perch's magic to Ruby/Sinatra sites, and this is my first draft attempting that.