Namespace Falcor data in Cerebral

Changelog

• Bug Fix: Falcor data is now namespaced in baobab, which prevents overwriting cerebral only state. Resolves: #3

• Falcor's source endpoint defaults to `'/model.json' and is not a required option

  Migration

• A namespace can be passed as an option to the falcor module. It defaults to 'falcor':

controller.register({
  falcor: FalcorModule({
    namespace: 'custom', // optional, defaults to 'falcor'
    model: model
  })
});

• Define the namespace in baobab:

const model = Model({
  page:'about',
  custom: {} // defaults to 'falcor'
});

• Update components to grab namespaced data: