Clean up .gitignore

.gitignore

 
 Library/*
 Temp/*
+obj/*
 *.csproj
 *.sln
 *.suo
 *.aspx
 *.sdf
 *.userprefs
-
-Assets/UnityHDRI.meta
-Assets/UnityHDRI/Gareoult/GareoultWhiteBalanced.exr
-obj/Debug/Assembly-CSharp.csproj.FileListAbsolute.txt

Assets/ScriptableRenderLoop/HDRenderLoop/HDRenderLoop.asset

     rotation: 0
     exposure: 0
     multiplier: 1
+    skyResolution: 256
   m_ShadowSettings:
     enabled: 1
     shadowAtlasWidth: 4096