* fix minor probmels in the docs

* typo

* remove pip source

* fix monitor

* add performance of A2C

* Update README.md

* modify logger for GPU detection

* fix css max-width bug

* check if monitor_port is used

* change master log dir to .parl_data/master/port

* Add docs/parallel_training/features.rst

* rename feature.rst to overview.rst

* Add xparl status & @remote_class(max_memory)

* fix yapf error

* use new remote/tests

* reply job_memory_info to client heartbeat

* add cluster_status_test.py

* update overview.rst

* Update docs

* add docs for the cluster

* mispelling issues

* minor change

* fix comment

* fix comments from yuxiang

* fix comment

* fix the bug of hyperlink

* rename