Move logic from routes to lib

[doowb]

I think we should move the logic that prepares the arguments and calls autotrace and fontcustom to lib folders: (e.g. lib/autotrace.js and lib/fontcustom.js or something like that), then we can test those pieces more easily, use them in the webapp part, and provide a library that can be required in by other libraries.

The following is a list of things that I think will accomplish the above:

• lib folder with autotrace and fontcustom specific code
• index.js will be a Fontastic object that uses the files from the lib folder
• path configuration should be passed to Fontastic and options can be passed to autotrace and fontcustom specific methods.
• workflow should be handled in Fontastic methods.
• routes handle transforming req/res specific properties to arguments passed to Fontastic methods.

[jollen]

I like this idea. As such, a CLI tool can be made with libs/ and also be highly decoupled from the views.