cleanup
SoundFile accepts callback, array for multiple file formats instead of pointless params, moved soundfile loading to preload in examples
ogg and mp3 files for examples. no more wav
Pulse fix
add ramp time to oscillator freq
loadSound works in preload or with callbacks + 1 example of each.
fixed preload loadSound() in examples
Merge pull request #244 from therewasaguy/p5sound

p5.SOUND updates