* Update getting_started.rst

* compile doc with chinese

* yapf

* fix the bug in building  the the docs

* update the version of the required Paddle

* fix the compatibility issue

* fix the comment issue

* support paddle 1.5.1 and replace PE with compiler

* yapf&copyright

* yapf

* fix the teamcity problem

* fix the teamcity problem

* fix comment

* only support paddle 1.5.1

* Cmake

* fix comment

* add documentaion for basic classes

* change the order of three basic classes

* fix commemt & yapf

* comment #2

* yapf#3

* fix commemt@zhs

* minor change

* modify comment

* Update algorithm.py

* Update agent.py

* Update algorithm.py

* add the tutorial: getting started

* fix commemt

* minor change

* test_docs

* Create index.md

* Delete index.md

* check yapf

* remove source

* Update conf.py

* update requirements

* add a new line at the end

* Fix End of Files

* fix-end-of-line

* remove requirements.txt

* Update .readthedocs.yml