Update README.md

README.md

@@ -3,7 +3,7 @@
   <a href="https://www.python.org/">:snake:</a> tools for performing various operations on <a href="http://www.loc.gov/standards/alto/">ALTO</a> XML files
 </p>
 <p align="center">
-  <!--<a href="pypi.org/project/alto-tools/"><img src="https://img.shields.io/pypi/v/alto-tools.svg" title="PyPI Version"></a>-->
+  <a href="pypi.org/project/alto-tools/"><img src="https://img.shields.io/pypi/v/alto-tools.svg" title="PyPI Version"></a>
   <a href="https://github.com/cneud/alto-tools/actions/workflows/tests.yml"><img src="https://github.com/cneud/alto-tools/actions/workflows/tests.yml/badge.svg" title="GitHub Actions Tests Status"></a>
   <a href="https://opensource.org/license/apache-2-0/"><img src="https://img.shields.io/github/license/cneud/alto-tools" title="Apache Software License 2.0"></a>
 </p>
@@ -12,7 +12,13 @@
 
 ## Installation
 
-Clone the repository, enter it and run
+You can install from [PyPI](https://pypi.org/project/alto-tools/) by running
+
+```bash
+pip install alto-tools
+```
+
+or clone the repository, enter it and run
 
 ```bash
 pip install .