* avoid installation of python 3.7.0 and typo
python 3.7.0 and 3.7.1 is problematic with Ray (happens while orca context being init.)
* go back to py 3.7
if base conda env is not py 3.7.0 or 3.7.1, then no pb.
* add updated information about models and Nano
* fix false formate
* add quantization related information
* fix missing quantization api doc
* fix typos
* fix chronos deep_dive link error
* add use-case
* delete the use-case contained in chronos.md
* add space
* modify the index.md format
* change page style
* fix link error
* change title link
* fix repo error
* change to relative path
* remove extra symbols
* add \n
* change use-case title
* fix anomaly detection link error
* add strcture change
* add change in index
* add change to index.rst
* revice the document
* add icons
* revise on the pages
* add readme update
* remove ood information
* change title
