GitLab

* add EvalHook

* add EvalHook

* refactor docstring

* polish

* use cp instead symlink

* add error info

* Update eval.py

* Update eval.py

* update

* add engine depandancy

* add comments

* fix unittest

* fix

* update unittest

* update unittest

* add docstring

* fix docstring

* Rewrite readme.rst by markdown

* Update setup.py

* Update mmcv links

* clean code

* Add logo

* Resolve comments

* clean unnecessary code change