[unity] gitignore - minor update.

.gitignore

@@ -70,6 +70,8 @@ spine-unity/Assets/spine-csharp*
 !spine-unity/Assets/spine-csharp/add spine-csharp src here.*
 spine-unity/Assets/Spine/Runtime/spine-csharp*
 !spine-unity/Assets/Spine/Runtime/spine-csharp/add spine-csharp here.txt.meta
+spine-unity/Assets/Tests/
+spine-unity/Assets/Tests.meta
 spine-unity/spine-unity.Editor.csproj
 spine-unity/spine-unity.csproj
 spine-unity/spine-unity.CSharp.csproj
@@ -82,7 +84,6 @@ spine-unity/obj
 Assembly-*.csproj
 Assembly-*.pidb
 AssetStoreTools*
-spine-unity/Assets/Tests/
 
 spine-tk2d/Assets/spine-csharp*
 !spine-tk2d/Assets/spine-csharp/Place spine-csharp src here.*