Added Usage guide to README.md

Author: EndCod3r

README.md

@@ -4,3 +4,25 @@
 > This script is not ready for use yet! Use at your own risk.
 
 EndCod3r's PC Optimizer! - Simple and easy way to speed up your PC!
+
+## Usage
+
+This script must be run in an admin PowerShell because it alters parts of the system that normal users can't.
+
+### Git Clone
+
+```ps1
+git clone https://github.com/EndCod3r/pc-optimizer.git
+cd pc-optimizer
+.\optimize.ps1
+```
+
+or if you don't have [Git](https://git-scm.com) installed
+
+### Download ZIP
+
+Look for and click the green `<> Code` button near the top of this repo's page and click `Download ZIP`
+
+Unzip the archive, and open a PowerShell as administrator, then navigate to the pc-optimizer directory and run `.\optimize.ps1`
+
+If you have any problems, create an [Issue](https://github.com/EndCod3r/pc-optimizer/issues/new)