Requirements:
Script Hook V by Alexander Blade
http://www.dev-c.com/gtav/scripthookv/

Installation:
1. Extract the InvisibilityCloak.asi file inside your GTA V root folder (Same folder that has the file PlayGTAV.exe)
2. PROFIT!

How to Use:
Press "I" on your keyboard as in "Invisibility" to toggle the mod on or off.

Glitches:
1. When you activate the invisibility, your weapons will also disappear, just change your weapon and they will show up again.