Dev/jpsnyder/speaker

Created an interface for using pygame as well as controlling volume, beeps, tones made from sine waves, and text to speech. 

Closes #7 
Correct - trash Beep(), keep Note().

And agreed about BEL.  In older computers, it most definitely would beep an actual buzzer.  In newer computers, the buzzer is usually gone, so they often reroute the BEL to play an actual sound via the sound subsystem.  At least that's the way it works on my Mac (and it worked that way on a Linux box I had).  I figured it would work that way on the Pi (and I don't doubt it could be setup to work that way, but there's no gain, so lets skip it).