Update Dart.gitignore
Dart2js (Dart's JavaScript compiler) no longer creates `foo.dart.precompiled.js` files when compiling.
D
Devon Carew committed
64ca10514b6a09781b3cda3af9ccdbac28728fd3
Parent: 7acb3d6
Dart2js (Dart's JavaScript compiler) no longer creates `foo.dart.precompiled.js` files when compiling.