Very minor framework project reorganization.
Added documentation for more MIKMIDICommand methods and subclasses.
Added description of MIKMIDIMappableResponder protocol.
Added documentation for MIKMIDIObject subclass methods.
Added documentation for MIKMIDISystemMessageCommand and MIKMIDISystemExclusiveCommand.
Added additional documentation for MIKMIDIMappingManager.
Documented MIKMIDIErrors.h
Documented remaining methods in NS/UIApplication+MIKMIDI category.
Finished documentation of MIKMIDIMappingGenerator.
Updates to documentation generation script.