Installation: 
Copy the content of the folder "Final Fantasy XV - Reshade" to the game main directory. 

Deletion: 
Delete the folder "reshade-shaders" and the files "dxgi.dll", "dxgi.ini", "FFXV.ini", "dxgi.log". 

Using the reshade preset: 
The preset is enabled by default. To disable or enable the preset press the Scroll Lock key. 

Download: 
http://www.mediafire.com/file/9y3l261e4hdokd2/Final%20Fantasy%20XV%20-%20Reshade.rar