Removed custom drivers andd iPad target.Fixed crash after ending call
Merge pull request #13 from bsrao/misc_changes

Removed custom drivers and iPad target.Fixed crash after ending call
MINOR Add comment about unusual designated initializer.

This code is a bit unorthodox, and merits a brief mention in order to draw eyes
to the underlying issue.
Merge pull request #14 from wobbals/dev-note-init-publisher

MINOR Add comment about unusual designated initializer.
Merge pull request #15 from bsrao/misc_changes

Archive status dot functionality changed
Added AUGraph teardown code and changed to VoiceProcessingIO unit for AEC
fix retain in observer block
Update to support audio in the simulator
Merge branch 'develop' of github.com:opentok/opentok-ios-sdk-samples into OPENTOK-14932
Merge branch 'develop' of https://github.com/SteveMcFarlin/opentok-ios-sdk-samples into develop

Conflicts:
	6.External-Audio-Device/External-Audio-Device/MyAudioDevice.m