Update .gitignore to new dart_tool pub cache (dart-archive/yaml#44)

bcko · kevmoo · commit 26070a96f9b5 · 2019-04-09T14:27:52.000-07:00
dart-lang/sdkdart-lang/yaml#32030
diff --git a/pkgs/yaml/.gitignore b/pkgs/yaml/.gitignore
@@ -1,5 +1,6 @@
 # Don&rsquo;t commit the following directories created by pub.
 .buildlog
+.dart_tool/
 .pub/
 build/
 packages
@@ -12,4 +13,4 @@ packages
 *.js.map
 
 # Include when developing application packages.
-pubspec.lock
+pubspec.lock
