add a  file separator, it mainly  to avoid  missing the file path separator in yml

add a necessary check for checkpoints, if you miss the file prefix and it will not execute the checkpoints codes

update -2020-0803 -V2

polish android readme

update-2020-8-3

Common modules do not need to be executed repeatedly

add beyond into thanks

read gif read func

update-2020-7-29

fix image list postfix

remove the  useless parameters  and  update import

update-2020-7-27

fix save img for pred_det

fix a typo