Merge pull request #2627 from mariuz/patch-1

remove VS year from comments

Unity.gitignore

@@ -5,7 +5,7 @@
 [Bb]uilds/
 Assets/AssetStoreTools*
 
-# Visual Studio 2015 cache directory
+# Visual Studio cache directory
 /.vs/
 
 # Autogenerated VS/MD/Consulo solution and project files