Using an AUGraph with the Multi-Channel Mixer and Remote I/O Audio Unit

Last Revision:	Version 1.0, 2015-06-19 Updated for iOS 8 and Xcode 6.3.1. Removed CAStreamBasicDescription in favor of new AVAudioFormat and Common 32bit float format.
Build Requirements:	iOS 8.3 SDK
Runtime Requirements:	iPhone OS 8.3 or later

Demonstrates how to build an Audio Unit Graph connecting a Multichannel Mixer instance to the RemoteIO unit. Two input busses are created each with input volume controls. An overall mixer output volume control is also provided and each bus may be enabled or disabled.