merge debian related changes
remove pdf
tarball name
update rules
debian packaging docs
update
/usr/bin/expyriment
update
Merge branch 'debian-0.7.0' of github.com:expyriment/expyriment into debian-0.7.0
pdf documentation
update Makefile
Merge branch 'debian' into developing

Conflicts:
	Makefile
	debian/changelog
	debian/control