Update README.md

Author: gil9red

README.md

@@ -4,11 +4,27 @@ Simple wait
 [![tests](https://github.com/gil9red/simple-wait/actions/workflows/run-tests.yml/badge.svg)](https://github.com/gil9red/simple-wait/actions/workflows/run-tests.yml)
 [![upload to pypi](https://github.com/gil9red/simple-wait/actions/workflows/python-publish.yml/badge.svg)](https://github.com/gil9red/simple-wait/actions/workflows/python-publish.yml)
 [![pypi](https://img.shields.io/pypi/v/simple-wait.svg)](https://pypi.org/project/simple-wait/)
-![pypi python versions](https://img.shields.io/pypi/pyversions/simple-wait.svg)
+[![pypi python versions](https://img.shields.io/pypi/pyversions/simple-wait.svg)](https://pypi.org/project/simple-wait/)
 [![image](https://img.shields.io/badge/code%20style-black-000000.svg)](https://pypi.org/project/black/)
 [![License](https://img.shields.io/badge/license-MIT-black.svg)](https://opensource.org/licenses/MIT)
 
-Example:
+## Installation
+You can install with:
+```
+pip install simple-wait
+```
+
+Install or upgrade:
+```
+pip install --upgrade simple-wait
+```
+
+Install or update from github:
+```
+pip install git+https://github.com/gil9red/simple-wait
+```
+
+## Example:
 ```python
 from datetime import datetime
 from simple_wait import wait