[DOC] update readme doc

README.md

@@ -2,9 +2,9 @@
 
 <img src="https://raw.githubusercontent.com/AbductiveLearning/ABLkit/main/docs/_static/img/logo.png" width="180">
 
-[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/ablkit)](https://pypi.org/project/ablkit/) [![PyPI version](https://badgen.net/pypi/v/ablkit)](https://pypi.org/project/ablkit/) [![Documentation Status](https://readthedocs.org/projects/ablkit/badge/?version=latest)](https://ablkit.readthedocs.io/en/latest/?badge=latest) [![license](https://img.shields.io/github/license/mashape/apistatus.svg?maxAge=2592000)](https://github.com/AbductiveLearning/ABLkit/blob/main/LICENSE) [![flake8 Lint](https://github.com/AbductiveLearning/ABLkit/actions/workflows/lint.yaml/badge.svg)](https://github.com/AbductiveLearning/ABLkit/actions/workflows/lint.yaml) [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black) [![ABLkit-CI](https://github.com/AbductiveLearning/ABLkit/actions/workflows/build-and-test.yaml/badge.svg)](https://github.com/AbductiveLearning/ABLkit/actions/workflows/build-and-test.yaml)
+[![license](https://img.shields.io/github/license/mashape/apistatus.svg?maxAge=2592000)](https://github.com/AbductiveLearning/ABLkit/blob/main/LICENSE) [![last commit](https://img.shields.io/github/last-commit/AbductiveLearning/ablkit)](https://img.shields.io/github/last-commit/AbductiveLearning/ablkit) [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/ablkit)](https://pypi.org/project/ablkit/) [![PyPI version](https://badgen.net/pypi/v/ablkit)](https://pypi.org/project/ablkit/) [![Documentation Status](https://readthedocs.org/projects/ablkit/badge/?version=latest)](https://ablkit.readthedocs.io/en/latest/?badge=latest) [![ABLkit-CI](https://github.com/AbductiveLearning/ABLkit/actions/workflows/build-and-test.yaml/badge.svg)](https://github.com/AbductiveLearning/ABLkit/actions/workflows/build-and-test.yaml) [![flake8 Lint](https://github.com/AbductiveLearning/ABLkit/actions/workflows/lint.yaml/badge.svg)](https://github.com/AbductiveLearning/ABLkit/actions/workflows/lint.yaml) [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)  [![PyPI - Downloads](https://img.shields.io/pypi/dm/ablkit)](https://pypi.org/project/ablkit/)
 
-[📘Documentation](https://ablkit.readthedocs.io/en/latest/index.html) | [📄Paper](https://journal.hep.com.cn/fcs/EN/10.1007/s11704-024-40085-7) | [📚Examples](https://github.com/AbductiveLearning/ABLkit/tree/main/examples) | [💬Reporting Issues](https://github.com/AbductiveLearning/ABLkit/issues/new)
+[📘Documentation](https://ablkit.readthedocs.io/en/latest/index.html) | [📄Paper](https://journal.hep.com.cn/fcs/EN/10.1007/s11704-024-40085-7) | [🧪Examples](https://github.com/AbductiveLearning/ABLkit/tree/main/examples) | [💬Reporting Issues](https://github.com/AbductiveLearning/ABLkit/issues/new)
 
 </div>