Merge pull request PaddlePaddle#760 from FlyingQianMM/release/2.0-rc_qh

set version to 2.0.0rc0

merge from deploykit (PaddlePaddle#754)

* merge from deploykit

* del DS_Store file

Delete .DS_Store

update version

Merge pull request PaddlePaddle#218 from joey12300/develop

encapsulate GenerateColormap in Visualize

update change log

delete useless files