* Change to 'pip install .. --extra-index-url' for readthedocs
* Change to 'pip install .. --extra-index-url' for examples
* Change to 'pip install .. --extra-index-url' for remaining files
* Fix URL for ipex
* Add links for ipex US and CN servers
* Update ipex cpu url
* remove readme
* Update for github actions
* Update for dockerfiles
* Update readthedocs readme before Latest Update
* Update before quick start section in index page
* Update quickstart section
* Further updates for Code Example
* Small fix
* Small fix
* Fix migration guide style