* rename vdl_scratch.py to vdl_create_scratch_log

* Simply replace the vdl_scratch.py

* Provide instructions on virtualenv.

* Clean up the detail a little bit.

* Add travis-ci job to deploy docs to visualdl.paddlepaddle.org.  Update readme's to correctly show all images.

* Add SSH known hosts

* Add in additional restrictions for documentation deploy:
* Only deploy on merge to 'develop' branch

Fix some typos

* Update README.md

Fix typo in the README python SDK example.

* Fix the typo in readme.cn

* init quick start

* add image

* add chinese introduction

* clean

* clean

* add graph

* fix path

* up

* add mdoel_pb