Update README.md

Added model description.

README.md

@@ -25,7 +25,7 @@ quantized_by: brooketh
 - **Original:** [Phi 3 mini 4k instruct](https://huggingface.co/microsoft/Phi-3-mini-4k-instruct)
 - **Date Created:** 2024-04-22
 - **Trained Context:** 4096 tokens
-- **Description:** (Add description here)
+- **Description:** State-of-the-art lightweight open model from Microsoft, trained with the Phi-3 datasets. These include both synthetic data and filtered publicly available websites data with a focus on high-quality and reasoning dense properties.
 
 ## What is a GGUF?
 GGUF is a large language model (LLM) format that can be split between CPU and GPU. GGUFs are compatible with applications based on llama.cpp, such as Faraday.dev. Where other model formats require higher end GPUs with ample VRAM, GGUFs can be efficiently run on a wider variety of hardware.