Exclude paths from Go To Anything in a project

http://sublimetext.userecho.com/topic/43409-ignore-file-types-and-directories-in-project-when-using-goto-anything/

However, as with the original (which has been marked closed) I would idealy like this on a per-project basis, because I want to exclude packaged javascript files.

Ideally I would still like to see them in the project, since it can be useful to have a look at the packages results, but I don't want to see duplicates for almost everything in "Go To Anything" results.

It's not a huge deal since Go To Anything is pretty smart and I can just prefix my terms with "src" to get only source files.