Update README.md

README.md

-# iLens Environment Settings
+# iLens Environment Settin
+
+## Installation
+```bash
+pip install git+https://gitlab-pm.knowledgelens.com/iudeen/ilens-env-settings.git
+```
 
 ## How to use?
 To get started, ensure you have set system environments or create .env file in your project root.