Extract common BadRequestException and RichRequest.
Extract common mapper and responders.
Extract PeersScuttlebutt from PeersResource.

closes #60
Add PeersFilter.

closes #61
Migrate Movies example from Finatra to Finagle.

Finatra is built against Twitter Server 6.17, and Treode's utilities for Twitter Server are built against 6.22. An incompatibility between the two prevented a gradual migration from Finatra to Finagle, so all the resources needed to be changed at once. Furthermore, Finatra provides MockApp for testing, but with Finagle one must setup a server and use a client for testing, so all the tests migrated from MockApp to RestAssured in this same CL.
The default store recovery should take scheduler as a parameter.

The default method for recovering a store built a scheduler, but then it wasn't available to the user. Now the method takes a scheduler as a parameter. For convenience, this adds a Globals object with a scheduler, and it adds an implicit scheduler in the StoreKit.
Stream (HTTP chunk) responses for Spark RDD.

closes #64
Documentation for Disk.