update shields

README.md

@@ -1,11 +1,13 @@
 ![Rendered SigMF Logo](https://raw.githubusercontent.com/sigmf/SigMF/refs/heads/main/logo/sigmf_logo.png)
 
-[![Documentation Shield](https://img.shields.io/readthedocs/sigmf)](https://sigmf.readthedocs.io/en/latest/)
+[![PyPI Version Shield](https://img.shields.io/pypi/v/sigmf)](https://pypi.org/project/SigMF/)
 [![Build Status Shield](https://img.shields.io/github/actions/workflow/status/sigmf/sigmf-python/main.yml)](https://github.com/sigmf/sigmf-python/actions?query=branch%3Amain)
+[![License Shield](https://img.shields.io/pypi/l/sigmf)](https://en.wikipedia.org/wiki/GNU_Lesser_General_Public_License)
+[![Documentation Shield](https://img.shields.io/readthedocs/sigmf)](https://sigmf.readthedocs.io/en/latest/)
 [![PyPI Downloads Shield](https://img.shields.io/pypi/dm/sigmf)](https://pypi.org/project/SigMF/)
 
-The `sigmf` module makes it easy to interact with Signal Metadata Format
-(SigMF) recordings. This module works with Python 3.7-3.13 and is distributed
+The `sigmf` library makes it easy to interact with Signal Metadata Format
+(SigMF) recordings. This library is compatible with Python 3.7-3.13 and is distributed
 freely under the terms GNU Lesser GPL v3 License.
 
 This module follows the SigMF specification [html](https://sigmf.org/)/[pdf](https://sigmf.github.io/SigMF/sigmf-spec.pdf) from the [spec repository](https://github.com/sigmf/SigMF).