* Update embedding label color

* Splite the data into matched and not-matched list

* After switching the dimension, also filter the list

* Use color variables to keep track the color

* Update color.

* Complete re layout the documentation on PPO.

* Add how to develop in cn. Also rearrange the demo location.

* Update the doc to use CDN

* Update installation guide.

* Update the doc setting to use layout.html template

* Update the documentations to fix some grammer error