Update README.md (#195)

Author: yspolyakov

README.md

@@ -2,6 +2,7 @@
 
 ## Table of Contents
 
+- [Installing using pip](#installing-using-pip)
 - [Running from Docker](#running-from-docker)
 - [Building from Source](#building-from-source)
   - [Prerequisites](#requirements)
@@ -12,6 +13,18 @@
 - [OpenFHE Python Wrapper Documentation](#openfhe-python-wrapper-documentation)
 - [Contributing Guide](#contributing-guide)
 
+## Installing using pip (for Ubuntu)
+
+On Ubuntu, openfhe-python can be installed using pip.  All available releases are listed at [Python Package Index OpenFHE Releases](https://pypi.org/manage/project/openfhe/releases/). Find the release for your version of Ubuntu and run
+
+```
+pip install openfhe==<openfhe_package_version>
+```
+
+Once installed, any python example at https://github.com/openfheorg/openfhe-python/tree/main/examples can be executed.
+
+Note that Ubuntu LTS 20.04, 22.04, and 24.04 are currently supported. `pip uninstal` can be used to uninstall the openfhe package.
+
 ## Running from Docker
 
 Please see [Instructions for the Docker setup](docker/README.md)