Strip "checkpoints/" from the load_model flag
Strip "checkpoints/" from the load_model flag

It's an easy mistake to try to pass the path to the model dir (ie. "checkpoints/20170929-1538") rather than the name of the directory ("20170929-1538"). 
If we strip out "checkpoints/", then naive attempts to pass the relative path will work, instead of producing an obscure error message.
vanhuyz/CycleGAN-TensorFlow,vanhuyz/CycleGAN-TensorFlow