update readme

Author: mowsec

README.md

@@ -3,6 +3,19 @@ A CLI tool for adding Contrast Integrations via rule customizations.
 
 Adapted from [Contrast-Security-OSS/integrations-scw](https://github.com/Contrast-Security-OSS/integrations-scw) to include a CLI tool, and also to include Secure Flag, Secure Code Warrior and possibly other integrations in the future.
 
+## Installation
+The quickest and easiest way to get started would be to install the CLI tool using pipx directly from the latest GitHub release:
+```sh
+pipx install https://github.com/Contrast-Security-OSS/contrast-integrations-cli/releases/download/v2.0.0/contrast_integrations_cli-2.0.0-py3-none-any.whl
+
+contrast-integrations --help
+```
+
+Or clone this repo and run the CLI tool with Poetry 
+* `poetry install` to install dependencies
+* `poetry run contrast-integrations --help` to run the CLI tool
+* `poetry build` to build a wheel file
+
 ## Usage
 ```sh
 contrast-integrations --help