Revert "Merge pull request #8 from aalfons/return"

This reverts commit 6b5a94f184a51ff3349f9a32b2f5f75d0c52e29a, reversing
changes made to f8015b39166840754542c4ba8cf390429f83d37a.

Conflicts:
	R/rd2roxygen.R
the roxygen.dir argument has been removed
update bib
version 1.4 should be ready for CRAN now