MOAR Config

[kevinkreiser]

We have to bite the bullet at some point and allow for a standard config.. At this point the api is configurable in a few ways but we really should make a config object that (probably serializes from yml or json) and can be passed around to the different constructors or whatever that need the options.

Right now a few things arent even configurable so we should make those so, specifically CORS headers and others, perhaps we can just have a section of key value pars of all headers to add to responses?