Organized the siamese network (Still buggy) and sketched the analyser

bob/learn/tensorflow/__init__.py

bob/learn/tensorflow/analyzers/Analizer.py

bob/learn/tensorflow/analyzers/__init__.py

bob/learn/tensorflow/data/DataShuffler.py

bob/learn/tensorflow/data/PairDataShuffler.py

bob/learn/tensorflow/data/__init__.py

bob/learn/tensorflow/layers/FullyConnected.py

bob/learn/tensorflow/loss/BaseLoss.py

bob/learn/tensorflow/loss/ContrastiveLoss.py

bob/learn/tensorflow/loss/__init__.py

bob/learn/tensorflow/network/Lenet.py

bob/learn/tensorflow/network/SequenceNetwork.py

bob/learn/tensorflow/script/train_mnist.py

bob/learn/tensorflow/script/train_mnist_siamese.py

bob/learn/tensorflow/trainers/SiameseTrainer.py

bob/learn/tensorflow/trainers/Trainer.py

bob/learn/tensorflow/trainers/__init__.py