Update sample.project.clj to show the behaviour of the foreign-libs under redirects

The :foreign-libs options only downloads the file from the url if it returns a 200.
If it returns a redirect (301, 302) the download is skipped and no message is given.

This is to document the behaviour to other people not get frustrated.
Merge pull request #220 from bltavares/patch-1

Update sample.project.clj to show the behaviour of the foreign-libs under redirects