README.md says that "deleteBundledFiles" is true by default. But in buildr.coffee, the default is false, which gives unexpected results. Particularly if I chain multiple buildr calls, the second one fails because the first one hasn't been cleaned up.
Anybody who uses this needs to be aware of that. I have fixed the code in my fork to match the documentation.
Fix issue #28.
Fixed by commit e2e39b4