* 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
* changed '/ppml' into '/bigdl' and modified llama-7b
* Added the contents of finetuning in README
* Modified link of qlora_finetuning.py in Dockerfile