Implemented all modules

reading_machine/include/Classifier.hpp

reading_machine/src/Classifier.cpp

torch_modules/include/DepthLayerTreeEmbeddingModule.hpp

torch_modules/include/FocusedColumnModule.hpp

torch_modules/include/GRUNetwork.hpp

torch_modules/include/LSTMNetwork.hpp

torch_modules/include/ModularNetwork.hpp

torch_modules/include/RawInputModule.hpp

torch_modules/include/SplitTransModule.hpp

torch_modules/src/DepthLayerTreeEmbeddingModule.cpp

torch_modules/src/FocusedColumnModule.cpp

torch_modules/src/GRUNetwork.cpp

torch_modules/src/LSTMNetwork.cpp

torch_modules/src/ModularNetwork.cpp

torch_modules/src/RawInputModule.cpp

torch_modules/src/SplitTransModule.cpp