Misc cleanup.
Renaming occurrences of "instance(s)" to "object(s)"
Adding +allInputDevices and +allOutputDevices methods to AMCoreAudioDevice
Move protocols into separate header file.
Updating README.md
Updating README.md
Updating README.md
Updating header docs.
Updating CHANGELOG.md
Updating AMCoreAudio.podspec
Merge pull request #3 from sonicbee9/develop

Merging into master.