Add `.dart_tool/`

Followup to https://github.com/dart-lang/site-www/issues/444#issuecomment-346560788

diff --git a/Dart.gitignore b/Dart.gitignore
index 4d2a4d6db7cdd6ddfadeb357a7c33f46ff84c227..58950beb4fa77637f8d70b795eb49aab79d7d802 100644 (file)
--- a/Dart.gitignore
+++ b/Dart.gitignore
@@ -1,6 +1,7 @@
 # See https://www.dartlang.org/tools/private-files.html
 
 # Files and directories created by pub
+.dart_tool/
 .packages
 .pub/
 build/