update readme

Author: Lingjiao Chen

README.md

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-# FrugalGPT
-FrugalGPT: better quality and lower cost for LLM applications
+# 🎓 FrugalGPT: Better Quality and Lower Cost for LLM Applications
+
+
+The FrugalGPT framework offers a collection of techniques for _building LLM applications with budget constraints_.
+
+## 🔧 Installation
+To install FrugalGPT, run the following commands:
+
+`git clone https://github.com/stanford-futuredata/FrugalGPT`
+
+`cd FrugalGPT`
+
+`pip install git+https://github.com/stanford-futuredata/FrugalGPT`
+
+`wget  https://github.com/lchen001/DataHolder/releases/download/v0.0.1/HEADLINES.zip`
+
+` unzip HEADLINES.zip -d strategy/`
+
+`rm HEADLINES.zip`
+
+`wget -P db/ https://github.com/lchen001/DataHolder/releases/download/v0.0.1/HEADLINES.sqlite`
+
+`wget -P db/ https://github.com/lchen001/DataHolder/releases/download/v0.0.1/qa_cache.sqlite`
+ 
+
+
+
+
+Now you are ready to use the [intro notebook](intro.ipynb)!
+
+## 🚀 Getting Started
+
+Our [intro notebook](intro.ipynb) provides examples of using FrugalGPT in a few different applications.
+
+You can also directly start with the  [Google Colab Notebook](https://colab.research.google.com/drive/1LM-Wq-u87VI4TKM4thpnwepnOxTAtWaM?authuser=1#scrollTo=a95a1eec). You don't even need API keys to get started with it.
+
+Once you go through the notebook, you'll be ready to build your own LLM applcations with FrugalGPT! 
+
+
+## 📚 Read More
+
+
+You can get an overview via our Twitter threads:
+* [**Introducing**](https://twitter.com/james_y_zou/status/1656285537185980417?cxt=HHwWgoCzqfa6p_wtAAAA)  [**FrugalGPT**](https://twitter.com/matei_zaharia/status/1656295461953650688?cxt=HHwWgIC2zc_8q_wtAAAA) (May 10, 2023)
+
+And read more in the academic paper:
+* [**FrugalGPT: How to Use Large Language Models While Reducing Cost and Improving Performance**](https://arxiv.org/pdf/2305.05176.pdf)
+
+## 🎯 Reference
+
+If you use FrugalGPT in a research paper, please cite our work as follows:
+
+
+```
+@article{chen2023frugalgpt,
+  title={FrugalGPT: How to Use Large Language Models While Reducing Cost and Improving Performance},
+  author={Chen, Lingjiao and Zaharia, Matei and Zou, James},
+  journal={arXiv preprint arXiv:2305.05176},
+  year={2023}
+}
+```