grayicon

Results 3 issues of grayicon

the code logic in the #371 line of channel_pruning_env.py is missing one line code: self.shared_idx.append(share_group) should be added after the for loop.

add a script to find the shared operators in the residual block of mobilenetV2 in root dir; ![results recording](https://user-images.githubusercontent.com/24351635/67541512-c7d03700-f71b-11e9-87df-0b1e9ece45c1.png)

Hi, Thanks for this implementation. I would like to know if there is any performance gain using this implementation compared to author's implementation when dealing with relatively large number of...