Fixed a couple of bugs, added a scale factor to compensate for
the low levels from the Sparkfun mems microphone (ADMP401 MEMS
Microphone). Added a way to retrieve the phoneme that would
have been classified when /f/ is returned from getPhoneme().
Slight code cleanup.
Changed the option keys to match the options.
Allow modes to be stopped and changed by pressing a non-option
key, or another option key.
Added phoneme sequence-based output to allow words to be
easily checked in 'p' mode.
Added a history log to track the phonemes, coefficients, micPower,
and timestamps associated with each phoneme recognised in a sequence.
Merge pull request #30 from harlequin-tech/master

enhanced tuning support, and a few bug fixes. Great Job @harlequin-tech