Update to OverCoat 2.0.2

[stevemoser]

trafficstars

Fixes #11

[gonzalezreal]

Thanks for the PR, but I think the ReadingList example does not show all the potential of Overcoat 2. This is why I created a new example for Overcoat 2.

[stevemoser]

Cool, yeah I just wanted an example of saving to disk instead of an in memory Core Data store.

[gonzalezreal]

The Twitter Timeline example is saving to disk using Core Data...