Convenience initializers for sums and products.
Moved files to a more appropriate directory.
Relinking files in examples.
Merge pull request #36 from aure/MusicalControls

Musical controls
Parameters get initial, min, and max values.

Pushed up the chain from properties, this reduces the amount of code and sets up future improvements.
Merge pull request #37 from aure/GiveParametersMinMaxInitialValues

Parameters get initial, min, and max values.
Deleted "EnergyReturn" parameter
Merge pull request #39 from narner/master

Deleted "EnergyReturn" parameter
Physical model updates
Scaling from other values added back to AK Instrument property.
Uncomment out a useful method in AKSum.
Allowing a stereo global
indentation fix
Removed a debugging NSLog
Included library properly on Touch Regions example
Touch Regions displays touch locations.
Giving note a duration so it is cleaned up over time.
Removing extra NSLogging.
Test orchestra
Added speed to file input.