Added featureExtraction option

maca_common/include/ProgramParameters.hpp

maca_common/src/ProgramParameters.cpp

trainer/src/Trainer.cpp

trainer/src/macaon_train.cpp

transition_machine/include/Classifier.hpp

transition_machine/include/FeatureModel.hpp

transition_machine/src/Classifier.cpp

transition_machine/src/FeatureModel.cpp