Getting ready to add timer callback to for Debug display on iPhone side
 Changed IO to both stereo and implemented left and right sample for
 none interleaved audio format. Still not working properly can still
 hear input on output line.
Last Commit before switch to Audio Graph
Almost finished implementing AUGraph. Still need to test that IO is
working with this method. Finally need to test edge detection algorithm
and add an NSData object to the GSFSensorIOController class.
Finished over haul to AUGraph and two way communication through is now
possible. Next step is recognize bits on the line to the iPhone.
Continuing working on edge detection calibration
Input MIC data to file, appears to be missing data in the wave.
Added:
    File IO to "stop" function. You must specify a new file name to
    write to and place that last file name in the in the "lastPath" variable
    initialization.
Issues:
    Appears to be missing data in a periodic spot leading me to beleive
    it's how the hardware buffer ahs been set up
Merge pull request #6 from mick31/audio_graph

Audio graph