Audio Routing

Gets audio stream from microphone input and re-routes it to headset out
(headphones). Warning: do not use with external speakers - will cause
horrible feedback loop.
Audio Routing Test Revision 2

Added convienience activity kill when activity is exited. Also
implemented an exit button to shut down the thread and exit the
application.
FFT Prototype

Implemented FFT algorithm and transformed FFT values into frequencies.
Needs further testing.
FFT Alpha

After testing and optimization, can recognize notes. I specifically
tested with 440Hz A.
Note Recognition and Note Class Hierarchy

Completed Note recognition. Can recognize notes based on frequency, can
identify octave and midi number.  Created Note as an abstract class,
implemented by SingleNote and Chord.  Only required method
implementation is toString.
Merge remote-tracking branch 'origin/Tuner-Framework' into Tuner-GUI