Update keras_optimization_helper.py

[shaoeric]

origin helper requires tensorflow cuda9.0, however, the hunter will output nothing and stop when working on cuda10. so add some information

[shaoeric]

so sorry, im not familiar with pull request, but why my new commit failed

[HunterMcGushion]

No worries! It looks like the code formatting reviews are complaining about spaces on one of the empty lines (line 63). They prefer empty lines to be completely empty, so you should be able to just backspace over the spaces in that line. Sounds ridiculous, I know haha

[shaoeric]

thanks