input/output example using pyaudio

Bare-bones example that continuously inputs an audio stream from the
microphone and outputs the same audio
minimal functioning version

Uses aubiopitch to detect pitch and gradually change output to match
what is heard.  There is a pause in the output while listening for
others.
Create README.md
more robust consensus

Getting better consensus by:
- mapping output to a single octave (new function mapToInterval)
- modification to detectPitch to avoid noise
Update README.md