Stuff talky needs

This now assumes that *_config.json provides:

```
andyetAuth: {
  id: 'blah'
  secret: 'donttell'
},
andyetAPIs: { // this is for overriding production api urls for localhost variants
  accounts: 'localhost url if not using production'
  shippy: 'ditto',
  talky: 'ditto'
},
bucker: {bucker stuff}
```

And using it should look like:
```
app.use(andyetAuth.middleware(app, {
    api: 'talky',
    defaultRedirect: '/app'  
}));
```