Versions that are shipped with Debian/Ubuntu
We are not covering the installation of Nginx through the repository of Nginx itself (Needed for Debian 7) See the howto on http://nginx.org/en/linux_packages.html for that.
To verify that we have the a version an above 1.4 run dpkg -l
CentOS doesn't have Nginx by default so we using the Nginx repository.
Install Nginx from the SUSE repository