Update .gitignore to new dart_tool pub cache (dart-archive/typed_data#14)

bcko · kevmoo · commit b518e0ffc566 · 2019-03-18T09:32:51.000-07:00
dart-lang/sdkdart-lang/typed_data#32030
diff --git a/pkgs/typed_data/.gitignore b/pkgs/typed_data/.gitignore
@@ -1,6 +1,7 @@
 .buildlog
 .DS_Store
 .idea
+.dart_tool/
 .pub/
 .settings/
 build/
