initial example

This is sample code that would be generated by the next version of loopback-workspace / `slc lb` command.

 - All configuration is in 3 static files
 - Removed concept of "modules"
 - Allow JS in JSON files using templating
 - `app.boot()` replaces the generated loader code

### How It Would Work

1. `slc lb` and other editors manipulate the 3 json config files
2. `app.boot()` initializes the app
3. app settings (app.set() from express) models and data sources are constructed from JSON files directly.
4. to use a model from code:

```js
var MyModel = require('loopback').models.MyModel;
MyModel.find({...}, console.log);
// ...
```

### Requirements:

 - models must be requireable without starting a server
 - config must be writeable and readable..
 - writing an app should require as little or no custom code at all