Haneke/HanekeSwift — pull request #90 by hpique (2014-09-28 09:22:03+00:00)
Title: Chainable fetch

__Do not review before #89.__

Simpler syntax for `Cache` fetches by using a chainable `Fetch` object.

```swift
cache.fetch(URL: URL).onSuccess { JSON in
// Do something with JSON
}
```