Ok, Here is a copy of the Yum conf with the extra tag you wanted, is this correct, because I save using :wq! with the VI and everytime I return there is nothing.
[main]
cachedir=/var/cache/yum
debuglevel=2
logfile=/var/log/yum.log
pkgpolicy=newest
distroverpkg=redhat-release
tolerant=1
exactarch=1
retries=20
obsoletes=1
gpgcheck=1
# PUT YOUR REPOS HERE OR IN separate files named file.repo
# in /etc/yum.repos.d
[livna-stable]
name=Livna.org - Fedora Compatible Packages (stable)
baseurl=http://rpm.livna.org/fedora/$releasever/$basearch/RPMS.stable
http://livna.cat.pdx.edu/fedora/$releasever/$basearch/RPMS.stable
#gpgcheck=1