* 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 README in LLM GPU Examples
* Update reference of Intel GPU
* add cpu_embedding=True in comment
* small fixes
* update GPU/README.md and add explanation for cpu_embedding=True
* address comments
* fix small typos
* add backtick for cpu_embedding=True
* remove extra backtick in the doc
* add period mark
* update readme
* Set BIGDL_IMPORT_IPEX default to true, i.e., auto import IPEX for XPU.
* Remove import intel_extension_for_pytorch as ipex from GPU example.
* Add support for bigdl-core-xe-21.
* add cpu and gpu examples of flan-t5
* address yuwen's comments
* Add explanation why we add modules to not convert
* Refine prompt and add a translation example
* Add a empty line at the end of files
* add examples of flan-t5 using optimize_mdoel api
* address bin's comments
* address binbin's comments
* add flan-t5 in readme