Cat-Model

Can you please review the code? I had to google a lot to find appropriate libraries and correct functions I am confused about what model.fit_generator,flow_from_directory does. Also I do not know how to set labels for training data(0 for cat 1 for dog) Also I am not sure how to predict for train set. Also is the model okay, what changes can I make?Hyperparameters and all? https://www.kaggle.com/c/dogs-vs-cats/data find the data here.