* replace instance_norm

* add version check

* update check version

* -1->None

* fix mistake

* change PyReader to from_generator

* fluid.layers.data->fluid.data

* fix_bug

* fix_infer_pix2pixreader

* add SPADE

* fix used

* add_license for PaddleCV

* update license date

* update GAN license date

* update gan0727

change set to list in c_gan

* update gan model

* update gan model time display

* update gan script

* update gan script

* refine gan

* fix dir and gpu

* update readme

* rm useless png

* fix bn warning

add run shell and infer shell for cgan and dcgan
update infer.py for gan and dcgan

* add instance norm

* fix_bn=1

* fix_nan

* update checkgpu

* Update README.md

* fix_save

* fix gan readme