Update README.md

Add an usage section.

Author: popenke

README.md

@@ -6,6 +6,14 @@ An ever updated Unity seed to start your projects 🌱
 ## About
 This project aims to maintain a Unity blank project with Git and Git LFS already set up. You can use it for a game jam, personal projects or even commercially. Just fork it and start your next groundbreaking game!
 
+## Usage
+Clone this repository and install **Git LFS** on it.
+
+```shell
+$ git lfs install
+```
+Now you're ready to go.
+
 ## Support
 ### Unity
 The Unity version of this project is: **`5.5.2f1`**