Updating the project, scenes, and readme.

.gitignore

 [Ll]ibrary/
+[Ll]ogs/
 [Tt]emp/
 [Oo]bj/
 [Bb]uild/
 # Visual Studio 2015 cache directory
 /.vs/
+.vscode
 
 # Ignore manually added packages
 com.*

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Assets/Scenes/Scale.unity

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Assets/Scenes/SimpleAR.unity

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README.md

 # AR Foundation Samples
 Example projects that use *AR Foundation* and demonstrate its functionality with sample assets and components.
 
-Compatible with Unity 2018.3.
+Compatible with Unity 2018.4.
-1. Download the latest version of Unity 2018.3
+1. Download the latest version of Unity 2018.4.
-2. Open Unity and load the project at the root of the *arfoundation-samples* repository
+2. Open Unity, and load the project at the root of the *arfoundation-samples* repository.
 
 3. Open your choice of sample scene.
 

ProjectSettings/XRSettings.asset

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