add shader graph samples

Simulation/Assets/Cinematic Look LUT Library/Readme.txt

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+Cinematic Look LUT Library by Flamacore!
+
+How-to:
+1-Import Image Effects pack from the Standard Assets package
+2-Add a Color Correction(3D Lookup Texture) script from Image Effects to your camera
+3-Drag & drop any LUT you wish to the texture selector of the script
+4-Convert & apply.
+
+Example scene is provided so that you can inspect the impact of each LUT on a certain color. In order to to run the example scene, again you need Image Effects pack from the Standard Assets package 
+
+Done :)